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<!-- DFIN New ActiveDisclosure (SM) XBRL Linkbase Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date :2023-03-16T15:50:47.9355+00:00 -->
<!-- Copyright (c) 2023 Donnelly Financial Solutions, Inc. All Rights Reserved. -->
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IssuanceOfCommonStockForSettlementOfSellerNote_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance Of Common Stock For Settlement Of Seller Note</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IssuanceOfCommonStockForSettlementOfSellerNote_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock for settlement of seller note, shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IssuanceOfCommonStockForSettlementOfSellerNote_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Issuance of common stock for settlement of outstanding seller note</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BasePercentageOfLessorsUsedToCalculateCurrentEventOfDefaultAcceleration_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Base percentage used to calculate current event of default acceleration</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BasePercentageOfLessorsUsedToCalculateCurrentEventOfDefaultAcceleration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Base Percentage Of Lessors Used To Calculate Current Event Of Default Acceleration</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BasePercentageOfLessorsUsedToCalculateCurrentEventOfDefaultAcceleration_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Base percentage of lessors used to calculate current event of default acceleration.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResearchAndDevelopmentExpensePolicy_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Research and Development</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResearchAndDevelopmentExpensePolicy_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Research And Development Expense Policy</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">FINANCING ACTIVITIES:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided By Used In Financing Activities [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IncomeTaxRateReconciliationWarrantLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Warrant liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IncomeTaxRateReconciliationWarrantLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrant liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IncomeTaxRateReconciliationWarrantLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Rate Reconciliation Warrant Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IncomeTaxRateReconciliationWarrantLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Income tax rate reconciliation warrant liabilities.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFiniteLivedIntangiblesAndGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net intangible assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFiniteLivedIntangiblesAndGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net assets acquired</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFiniteLivedIntangiblesAndGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net intangible assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFiniteLivedIntangiblesAndGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Finite Lived Intangibles And Goodwill</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFiniteLivedIntangiblesAndGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination, recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles and goodwill.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityPeriodicPaymentPrincipal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash payments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityPeriodicPaymentPrincipal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Periodic Payment Principal</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Long-Term Line of Credit, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit, outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NovemberSixteenTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">November 16, 2021</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NovemberSixteenTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">November Sixteen Two Thousand Twenty One [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NovemberSixteenTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">November 16, 2021.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amendment Flag</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amendment Flag</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SmashMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Smash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SmashMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Smash [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SmashMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Smash.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SellingAndMarketingExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sales and distribution expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SellingAndMarketingExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Selling And Marketing Expense [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AccruedExpensesAndOtherLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Accrued and current liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AccruedExpensesAndOtherLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued and other current liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AccruedExpensesAndOtherLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Expenses And Other Liabilities Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AccruedExpensesAndOtherLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Accrued expenses and other liabilities current.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit facility, interest rate per annum</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Interest Rate During Period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ExtinguishmentOfDebtAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Extinguishment of Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ExtinguishmentOfDebtAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Extinguishment Of Debt [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Accumulated Amortization</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Accumulated Amortization</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AmazonGlobalLogistics_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amazon global logistics</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AmazonGlobalLogistics_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amazon Global Logistics</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AmazonGlobalLogistics_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amazon global logistics.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ProductRelatedAccruals_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Product related accruals</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ProductRelatedAccruals_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Product Related Accruals</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ProductRelatedAccruals_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Product related accruals.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GoodwillMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GoodwillMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionSharePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Closing stock price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionSharePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition Share Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TransitionServicesAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Transition Services Agreement</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TransitionServicesAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Transition Services Agreement [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TransitionServicesAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Transition services agreement.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Goodwill, Beginning Balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Goodwill, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Goodwill</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">GOODWILL&#8212;net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Net Book Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IncomeTaxRateReconciliationPermanentDifferences_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Permanent differences</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IncomeTaxRateReconciliationPermanentDifferences_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Rate Reconciliation Permanent Differences</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IncomeTaxRateReconciliationPermanentDifferences_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Income tax rate reconciliation permanent differences.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_CommonStockWarrantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common Stock Warrant</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_CommonStockWarrantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Warrant [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_CommonStockWarrantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Common stock warrant.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Right-of-use asset</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Right Of Use Asset</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HousewaresMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Housewares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HousewaresMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Housewares [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HousewaresMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Housewares.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ChangeInFairValueOfWarrantLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in fair value of warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ChangeInFairValueOfWarrantLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Fair value of warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ChangeInFairValueOfWarrantLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Change in fair value of warrant liability.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ChangeInFairValueOfWarrantLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change In Fair Value Of Warrant Liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares of common stock issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Common Stock Shares Issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination recognized identifiable assets acquired and liabilities assumed common stock shares issued.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueLow_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business combination, contingent consideration earn out amount, minimum</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueLow_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Contingent Consideration Arrangements Range Of Outcomes Value Low</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LitigationSettlementAmountAwardedToOtherParty_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Litigation settlement</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LitigationSettlementAmountAwardedToOtherParty_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Litigation Settlement Amount Awarded To Other Party</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ValuationAllowancesAndReservesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SEC Schedule, 12-09, Valuation Allowances and Reserves</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ValuationAllowancesAndReservesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Valuation Allowances And Reserves [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Loss Per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share Policy [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SettlementChargeOfContingentEarnoutLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Settlement charge of contingent earn-out liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SettlementChargeOfContingentEarnoutLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Settlement of a contingent earn-out liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SettlementChargeOfContingentEarnoutLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Settlement Charge Of Contingent Earnout Liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SettlementChargeOfContingentEarnoutLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Settlement charge of contingent earn-out liability.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DiscountOfDebtRelatingToWarrantsIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Discount of debt relating to warrants issuance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DiscountOfDebtRelatingToWarrantsIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Discount Of Debt Relating To Warrants Issuance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DiscountOfDebtRelatingToWarrantsIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Discount of debt relating to warrants issuance.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LineOfCreditFacilityNumberOfInstallments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of repayment installments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LineOfCreditFacilityNumberOfInstallments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Number Of Installments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LineOfCreditFacilityNumberOfInstallments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of credit facility number of monthly installments.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PayrollRelatedCreditsCOVID19_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Payroll related credits</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PayrollRelatedCreditsCOVID19_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payroll Related Credits C O V I D19</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PayrollRelatedCreditsCOVID19_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Payroll related credits COVID19.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LondonInterbankOfferedRateLIBORMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">London Interbank Offered Rate (LIBOR)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LondonInterbankOfferedRateLIBORMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">London Interbank Offered Rate L I B O R [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AccruedFulfillmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued fulfillment expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AccruedFulfillmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Fulfillment Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AccruedFulfillmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Accrued fulfillment expense.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OverTwentyFourMonthsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vesting Over Succeeding 24 Months</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OverTwentyFourMonthsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Over Twenty Four Months [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OverTwentyFourMonthsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Over twenty-four months.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Acquisition</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockholdersEquityLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stockholders Equity [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockholdersEquityLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stockholders Equity [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockholdersEquityLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Stockholders Equity [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares reserved for future issuance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Capital Shares Reserved For Future Issuance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AuditorFirmId_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Auditor Firm ID</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AuditorFirmId_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Auditor Firm Id</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Weighted Average Grant-Date Fair Value, Nonvested at January 1, 2022</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Weighted Average Grant-Date Fair Value, Nonvested at December 31, 2022</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NineMonthsFollowingClosingDateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Nine Months Following Closing Date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NineMonthsFollowingClosingDateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Nine Months Following Closing Date [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NineMonthsFollowingClosingDateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Nine Months Following Closing Date.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Grant-Date Fair Value, Vested</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">High Trail</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">High Trail [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">High Trail.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DebtOffsetAgainstAndExpenseOverTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt offset against and expense over the term</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DebtOffsetAgainstAndExpenseOverTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Offset Against And Expense Over Term</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DebtOffsetAgainstAndExpenseOverTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt offset against and expense over the term.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AssetPurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset Purchase Agreement</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AssetPurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset Purchase Agreement [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AssetPurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Asset purchase agreement.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PrefundedWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pre-Funded Warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PrefundedWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Prefunded Warrants [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PrefundedWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Pre Funded Warrants.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Inventory</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business acquisition, inventory acquired</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Inventory</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailDecember2021NoteAndFebruary2022TermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">High Trail December 2021 Note and February 2022 Term Loan</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailDecember2021NoteAndFebruary2022TermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">High Trail December2021 Note And February2022 Term Loan [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailDecember2021NoteAndFebruary2022TermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">High Trail December 2021 note and February 2022 term loan.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PhotoPaperDirectLTDMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Photo Paper Direct Ltd.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PhotoPaperDirectLTDMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Photo Paper Direct L T D [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PhotoPaperDirectLTDMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Photo Paper Direct Ltd.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_EquityFundraisingCostsNotPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity fundraising costs not paid</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_EquityFundraisingCostsNotPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Fundraising Costs Not Paid</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_EquityFundraisingCostsNotPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Equity fundraising costs not paid.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AugustTwoThousandAndTwentyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">August 2020</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AugustTwoThousandAndTwentyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">August Two Thousand And Twenty [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AugustTwoThousandAndTwentyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">August 2020.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_JuneThirtyTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">June 30, 2021</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_JuneThirtyTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">June Thirty Two Thousand Twenty One [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_JuneThirtyTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">June 30, 2021.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acquisitions</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Disclosure [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OtherMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OtherMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OtherMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxAuthorityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Tax Authority</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxAuthorityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Authority [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SalesAndDistributionPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sales and Distribution</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SalesAndDistributionPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sales And Distribution Policy [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SalesAndDistributionPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sales and distribution.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ProductOrServiceAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Product and Service</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ProductOrServiceAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Product Or Service [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OrganizationAndDescriptionOfBusinessTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Organization And Description Of Business [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OrganizationAndDescriptionOfBusinessTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization And Description Of Business [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OrganizationAndDescriptionOfBusinessTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Organization and description of business.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationContingentConsiderationLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Business Combination, Contingent Consideration, Liability, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationContingentConsiderationLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business combination, contingent consideration earn out amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationContingentConsiderationLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning Balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationContingentConsiderationLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending Balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationContingentConsiderationLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Contingent Consideration Liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LitigationSettlementExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Litigation settlement expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LitigationSettlementExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Litigation Settlement, Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_KitchenAppliancesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Kitchen Appliances</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_KitchenAppliancesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Kitchen Appliances [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_KitchenAppliancesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Kitchen appliances.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ProvisionForSalesReturns_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Provision for sales returns</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ProvisionForSalesReturns_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Provision For Sales Returns</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ProvisionForSalesReturns_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Provision for sales returns.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Employee-related Liabilities, Current, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued compensation costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Related Liabilities Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_WarrantsPriorToDay_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrants exercise period after resale</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_WarrantsPriorToDay_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Warrants prior to day.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConcentrationRiskByTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Concentration Risk Type</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConcentrationRiskByTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Concentration Risk By Type [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AterianTwoThousandFourteenPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aterian 2014 Plan</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AterianTwoThousandFourteenPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Aterian two thousand fourteen plan.</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TaxPeriodAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tax Period</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OperatingLeaseRightOfUseAssetCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Operating lease right-of-use asset, current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OperatingLeaseRightOfUseAssetCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Right Of Use Asset Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OperatingLeaseRightOfUseAssetCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Right-of-Use-Asset</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OperatingLeaseRightOfUseAssetCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Current right-of-use assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PlanNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Plan Name</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PlanNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Plan Name [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IssuanceOfRestrictedStockAwardsShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of restricted stock awards, shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IssuanceOfRestrictedStockAwardsShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance Of Restricted Stock Awards Shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IssuanceOfRestrictedStockAwardsShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Issuance of restricted stock awards, shares.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Impairments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Impairments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill Impairments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill Impaired Accumulated Impairment Loss</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Deferred tax liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred tax liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deferred Tax Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAdjustmentOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Loss (gain) in connection with the change in warrant fair value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAdjustmentOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair value of warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAdjustmentOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CHANGE IN FAIR VALUE OF WARRANT LIABILITY</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TruweoAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Truweo Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TruweoAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Truweo Assets [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TruweoAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Truweo assets.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TwoThousandNineteenEquityPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">2019 equity plan.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TwoThousandNineteenEquityPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Nineteen Equity Plan [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TwoThousandNineteenEquityPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2019 Equity Plan</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityCollateralFeesAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Increase minimum cash threshold covenant</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityCollateralFeesAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Collateral Fees Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredForeignIncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Foreign</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredForeignIncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Foreign Income Tax Expense Benefit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DebtOriginalIssueDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Original issue discount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DebtOriginalIssueDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Original Issue Discount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DebtOriginalIssueDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt original issue discount.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Incorporation, State or Country Code</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Incorporation State Country Code</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Statement [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SubstantialDoubtAboutGoingConcernUnrestrictedCashAndCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Going concern, unrestricted cash and cash equivalents</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SubstantialDoubtAboutGoingConcernUnrestrictedCashAndCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Substantial doubt about going concern unrestricted cash and cash equivalents</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SubstantialDoubtAboutGoingConcernUnrestrictedCashAndCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Substantial doubt about going concern unrestricted cash and cash equivalents.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxReconciliationOtherAdjustments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other permanent differences</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxReconciliationOtherAdjustments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Effective Income Tax Rate Reconciliation, Other Adjustments, Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsReceivableNetCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Receivable Net Current [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Organization and Description of Business</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NumberOfCustomerAccountedForTenPercentOrMoreOfRevenue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of customer accounted</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NumberOfCustomerAccountedForTenPercentOrMoreOfRevenue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Customer Accounted For Ten Percent Or More Of Revenue</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NumberOfCustomerAccountedForTenPercentOrMoreOfRevenue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number Of Customer Accounted For Ten Percent Or More Of Revenue</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AdjustmentsToAdditionalPaidInCapitalGainLossOnInitialIssuanceOfEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Adjustments to additional paid in capital gain (loss) on initial issuance of equity.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AdjustmentsToAdditionalPaidInCapitalGainLossOnInitialIssuanceOfEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments To Additional Paid In Capital Gain Loss On Initial Issuance Of Equity</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AdjustmentsToAdditionalPaidInCapitalGainLossOnInitialIssuanceOfEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss on initial issuance of equity</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockNameOfTransactionDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale of Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockNameOfTransactionDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale Of Stock Name Of Transaction [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SubstantialDoubtAboutGoingConcernAccessibleBorrowingsUnderOurCreditFacility_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Going concern, accessible borrowings under our credit facility</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SubstantialDoubtAboutGoingConcernAccessibleBorrowingsUnderOurCreditFacility_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Substantial doubt about going concern accessible borrowings under our credit facility</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SubstantialDoubtAboutGoingConcernAccessibleBorrowingsUnderOurCreditFacility_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Substantial doubt about going concern accessible borrowings under our credit facility.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_GainLossOnInitialIssuanceOfEquity_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Loss on initial issuance of equity</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_GainLossOnInitialIssuanceOfEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Gain (loss) on initial issuance of equity.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_GainLossOnInitialIssuanceOfEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain Loss On Initial Issuance Of Equity</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_GainLossOnInitialIssuanceOfEquity_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Loss on initial issuance of equity</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total current liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationsPolicy_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Combinations</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationsPolicy_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combinations Policy</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating loss carry forwards</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TruweoAssetsOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Truweo Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TruweoAssetsOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Truweo Assets One [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TruweoAssetsOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Truweo assets one.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TerminatedCreditAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Terminated Credit Agreement</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TerminatedCreditAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Terminated Credit Agreement [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TerminatedCreditAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Terminated Credit Agreement.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_GainLossOnExtinguishmentOfSellerNote_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Gain loss on extinguishment of seller note.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_GainLossOnExtinguishmentOfSellerNote_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain Loss On Extinguishment Of Seller Note</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_GainLossOnExtinguishmentOfSellerNote_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">GAIN ON EXTINGUISHMENT OF SELLER NOTE</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Acquisition, Acquiree</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition Acquiree [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Interest Expense, Total</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Accounts Receivable, Allowance for Credit Loss, Ending Balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Accounts Receivable, Allowance for Credit Loss, Beginning Balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allowance for doubtful accounts</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Allowance For Doubtful Accounts Receivable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PaymentsOfInsuranceObligationFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Insurance obligation payments</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PaymentsOfInsuranceObligationFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Insurance obligation payments.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-based Compensation Award, Tranche Two</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Taxes</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Goodwill</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Liabilities, Goodwill</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TwoThousandEighteenEquityIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2018 Plan</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfOutstandingStockMaximum_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Percentage Of Outstanding Stock Maximum</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ReclassificationFromLiabilityToComponentOfEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reclassification from a liability to component of equity</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ReclassificationFromLiabilityToComponentOfEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Reclassification from a liability to a component of equity.</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IncomeTaxesDisclosureTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Income Taxes Disclosure [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SignificantAccountingPoliciesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Significant Accounting Policies [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SignificantAccountingPoliciesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Significant Accounting Policies [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SignificantAccountingPoliciesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Significant Accounting Policies.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Foreign currency translation adjustments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionPayablesAssumed1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notes payable of acquisition</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionPayablesAssumed1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noncash Or Part Noncash Acquisition Payables Assumed1</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-based Compensation Award, Tranche One</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Award Tranche One [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Amortization Expense Next Twelve Months</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Range [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TrademarksMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trademarks</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TrademarksMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trademarks [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IncreaseDecreaseInAccountsPayableAccruedAndOtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts payable, accrued and other liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IncreaseDecreaseInAccountsPayableAccruedAndOtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Accounts Payable Accrued And Other Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IncreaseDecreaseInAccountsPayableAccruedAndOtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase decrease in accounts payable accrued and other liabilities.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_JuneTwelveTwoThousandAndTwentyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">June 12, 2020</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_JuneTwelveTwoThousandAndTwentyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">June Twelve Two Thousand And Twenty [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_JuneTwelveTwoThousandAndTwentyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">June 12, 2020.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailApril2022TermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">High Trail April 2022 Term Loan</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailApril2022TermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">High Trail April2022 Term Loan [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailApril2022TermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">High Trail April 2022 Term Loan.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DiscountAssociatedWithOriginalIssuanceOfLoan_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: discount associated with original issuance of loan</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DiscountAssociatedWithOriginalIssuanceOfLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Discount Associated With Original Issuance Of Loan</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DiscountAssociatedWithOriginalIssuanceOfLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Discount associated with original issuance of loan.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Changes in Goodwill and Intangible Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Intangible Assets And Goodwill Table [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_RepaymentsOfDebtAfterAcceleratedPrincipalAddition_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument redemption amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_RepaymentsOfDebtAfterAcceleratedPrincipalAddition_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments Of Debt After Accelerated Principal Addition</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_RepaymentsOfDebtAfterAcceleratedPrincipalAddition_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Repayment of debt after accelerated principal addition.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockIssuedDuringPeriodSharesCommonStockUponExerciseOfStockOptionGrants_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock upon exercise of stock option grants, shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockIssuedDuringPeriodSharesCommonStockUponExerciseOfStockOptionGrants_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Shares Common Stock Upon Exercise Of Stock Option Grants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockIssuedDuringPeriodSharesCommonStockUponExerciseOfStockOptionGrants_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Stock issued during period shares common stock upon exercise of stock option grants.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transactions By Related Party [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationContingentConsiderationEarnOutGeneratedAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business combination contingent consideration earn out generated amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationContingentConsiderationEarnOutGeneratedAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Contingent Consideration Earn Out Generated Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationContingentConsiderationEarnOutGeneratedAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination contingent consideration earn out generated amount.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PercentageOfChangeInStockBasedCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of change</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PercentageOfChangeInStockBasedCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Change in Stock Based Compensation Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PercentageOfChangeInStockBasedCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of change in stock based compensation expense.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">TOTAL ASSETS</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net revenue</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Pro Forma Information Revenue Of Acquiree Since Acquisition Date Actual</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PercentageOfInvestmentTaxCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of investment tax credit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PercentageOfInvestmentTaxCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Investment Tax Credit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PercentageOfInvestmentTaxCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of investment tax credit.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ProductRevenueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Product Revenue</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ProductRevenueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Product Revenue [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ProductRevenueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Product revenue.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StateAndLocalJurisdictionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">State and Local Jurisdiction</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncomeExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Expense, Net</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IncomeTaxRateReconciliationChangeInFairValueContingentConsideration_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in FV contingent consideration</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AugustTenTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">August 10, 2021</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AugustTenTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">August Ten Two Thousand Twenty One [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AugustTenTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">August 10, 2021.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Earnings Per Share, Diluted, Total</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContingentLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated earn-out liability</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailFebruary2022NoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">High Trail February 2022 Note</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailFebruary2022NoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">High trail February 2022 note.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LineOfCreditFacilityMaximumLiquidityRequirementsDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit facility, maximum liquidity requirements during the period</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LineOfCreditFacilityMaximumLiquidityRequirementsDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of credit facility, maximum liquidity requirements during period.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LossOnInitialIssuanceOfWarrant_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Loss on initial issuance of warrants</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LossOnInitialIssuanceOfWarrant_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loss on initial issuance of warrant.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NonCashFairValueOfContingentConsiderations_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of contingent consideration</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NonCashFairValueOfContingentConsiderations_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Non cash fair value of contingent consideration.</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationContingentConsiderationEarnOutMargin_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination contingent consideration earn out margin.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_InventoryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Inventory</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_InventoryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Inventory [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_InventoryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Inventory.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Postal Zip Code</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address Postal Zip Code</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AfterNineMonthsButBeforeTwelveMonthsFollowingClosingDateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">After Nine Months But Before 12 Months Following Closing Date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AfterNineMonthsButBeforeTwelveMonthsFollowingClosingDateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">After Nine Months But Before Twelve Months Following Closing Date [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AfterNineMonthsButBeforeTwelveMonthsFollowingClosingDateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">After Nine Months But Before 12 Months Following Closing Date.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Fiscal Period Focus</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_CommitmentAndContingenciesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitment And Contingencies [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_CommitmentAndContingenciesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitment And Contingencies [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_CommitmentAndContingenciesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Commitment and contingencies.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AssetBackedCreditAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset Backed Credit Agreement</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AssetBackedCreditAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset Backed Credit Agreement [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AssetBackedCreditAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Asset backed credit agreement.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostOfGoodsAndServicesSold_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Cost of Goods and Services Sold, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostOfGoodsAndServicesSold_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">COST OF GOODS SOLD</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailApril2022NoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">High Trail April 2022 Note</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailApril2022NoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">High trail April 2022 note.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total current income tax expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Current Income Tax Expense Benefit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Accounts receivable</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevolvingCreditFacilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revolving Credit Facility</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevolvingCreditFacilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revolving Credit Facility [Member]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets Valuation Allowance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">APIC, Share-Based Payment Arrangement, Increase for Cost Recognition, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock-based compensation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxLiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred tax liabilities:</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeInterest_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Interest income</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Income Interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Operating Lease, Liability, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease, liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Cash provided by financing activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided By Used In Financing Activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Fixed assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fixed assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Liabilities, Property, Plant and Equipment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_EntitledToPayableNumberOfSharesOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entitled to payable number of shares of common stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_EntitledToPayableNumberOfSharesOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entitled To Payable Number Of Shares Of Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_EntitledToPayableNumberOfSharesOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Entitled to payable number of shares of common stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SquattyPottyLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Squatty Potty, LLC</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SquattyPottyLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Squatty Potty L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SquattyPottyLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Squatty Potty, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OrganizationAndDescriptionOfBusinessLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Organization And Description Of Business [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OrganizationAndDescriptionOfBusinessLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization And Description Of Business [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OrganizationAndDescriptionOfBusinessLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Organization and description of business.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_MarchTwentyTwoThousandAndTwentyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">March 20, 2020</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_MarchTwentyTwoThousandAndTwentyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">March Twenty Two Thousand And Twenty [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_MarchTwentyTwoThousandAndTwentyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">March 20, 2020.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermDebtTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Short-Term Debt, Type</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermDebtTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Short Term Debt Type [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IssuanceOfCommonStockRelatedToExerciseOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Issuance of common stock related to exercise of warrants.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IssuanceOfCommonStockRelatedToExerciseOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance Of Common Stock Related To Exercise Of Warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IssuanceOfCommonStockRelatedToExerciseOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock related to exercise of warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement Of Financial Position [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LineOfCreditFacilityAndTermLoanInterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest expense of credit facilities</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LineOfCreditFacilityAndTermLoanInterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of credit facility and term loan interest expense.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFileNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity File Number</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFileNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity File Number</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SubstantialDoubtAboutGoingConcernAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Going concern, accumulated deficit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SubstantialDoubtAboutGoingConcernAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Substantial Doubt About Going Concern Accumulated Deficit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SubstantialDoubtAboutGoingConcernAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Substantial doubt about going concern accumulated deficit.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SmashAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Smash Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SmashAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Smash Assets [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SmashAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Smash assets.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioUnspecifiedDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Scenario [Domain]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DeferredTaxAssetsIntangibles_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Intangibles (definite life)</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DeferredTaxAssetsIntangibles_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Deferred tax assets intangibles.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailApril2021TermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">High Trail April 2021 Term Loan</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailApril2021TermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">High Trail April 2021 Term Loan [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailApril2021TermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">High Trail April 2021 Term Loan.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrants to purchase shares</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReturnsAndAllowances_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sales returns reserve</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total December 2020 Note</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_SegmentGeographicalDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Geographical</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement Of Stockholders Equity [Abstract]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit facility maximum borrowing amount</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finite-Lived Intangible Assets, Major Class Name</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Major Class Name [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_FurnitureFixtureAndEquipmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Furniture, Fixtures and Equipment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_FurnitureFixtureAndEquipmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Furniture Fixture And Equipment [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_FurnitureFixtureAndEquipmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Furniture fixture and equipment.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">State income taxes, net of federal tax benefit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Reconciliation State And Local Income Taxes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditFacilityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Facility</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditFacilityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Facility [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total unrecognized compensation expense related to unvested shares of restricted common stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StepAndGoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Step and Go</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StepAndGoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Step and Go [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StepAndGoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Step and Go.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ValuationAllowancesAndReservesBalance_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Balance at Beginning of Period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ValuationAllowancesAndReservesBalance_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance at End of Period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ValuationAllowancesAndReservesBalance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Valuation Allowances And Reserves Balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">General and Administrative Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">General And Administrative Expense [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationContingentConsiderationSubjectToCap_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business combination contingent consideration subject to cap</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationContingentConsiderationSubjectToCap_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Contingent Consideration Subject To Cap</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationContingentConsiderationSubjectToCap_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination contingent consideration subject to cap.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total unrecognized compensation expense related to unvested options</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_WithheldOfCashPurchasePriceToServeCollateralForSellersPayment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Withheld of cash purchase price to serve collateral for sellers payment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_WithheldOfCashPurchasePriceToServeCollateralForSellersPayment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Withheld Of Cash Purchase Price To Serve Collateral For Sellers Payment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_WithheldOfCashPurchasePriceToServeCollateralForSellersPayment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Withheld of cash purchase price to serve collateral for sellers payment.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NumberOfCustomerAccountedForTenPercentOrMoreOfAccountsReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of customer accounted</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NumberOfCustomerAccountedForTenPercentOrMoreOfAccountsReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Customer Accounted For Ten Percent Or More Of Accounts Receivable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NumberOfCustomerAccountedForTenPercentOrMoreOfAccountsReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of customer accounted for ten percent or more of accounts receivable.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current Fiscal Year End Date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Current Fiscal Year End Date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment Type</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Type [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByLiabilityClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liability Class</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByLiabilityClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value By Liability Class [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_WarrantAmendmentConditionDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrant amendment description</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_WarrantAmendmentConditionDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrant Amendment Condition Description</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_WarrantAmendmentConditionDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Warrant amendment condition description.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Depreciation_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Depreciation, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Depreciation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Depreciation expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Depreciation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Depreciation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LineOfCreditFacilityMaximumFutureIncreaseBorrowingCapacityAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional increase in borrowing amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LineOfCreditFacilityMaximumFutureIncreaseBorrowingCapacityAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Maximum Future Increase Borrowing Capacity Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LineOfCreditFacilityMaximumFutureIncreaseBorrowingCapacityAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of credit facility maximum future increase borrowing capacity amount.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">TOTAL CASH AND RESTRICTED CASH</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash and restricted cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">CASH AND RESTRICTED CASH AT BEGINNING OF YEAR</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">CASH AND RESTRICTED CASH AT END OF YEAR</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_MarchTwelveTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">March Twelve Two Thousand Twenty One</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_MarchTwelveTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">March Twelve Two Thousand Twenty One [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_MarchTwelveTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">March 12, 2021.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">OTHER NON-CURRENT ASSETS</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Assets Noncurrent</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Address Line One</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address Address Line1</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">PP&amp;E</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property Plant And Equipment [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Repayments of Long-Term Debt, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Repayments of debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Repaying of term loan</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments Of Long Term Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Intangibles</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentAnnualReport_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Annual Report</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentAnnualReport_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Annual Report</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailDecember2022NoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">High Trail December 2022 Note</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailDecember2022NoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">High Trail December2022 Note [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailDecember2022NoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">High Trail December 2022 Note.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finite-Lived Intangible Assets by Major Class</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets By Major Class [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HealthAndBeautyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Health and Beauty</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HealthAndBeautyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Health And Beauty [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HealthAndBeautyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Health and beauty.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromLinesOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Proceeds from Lines of Credit, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromLinesOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Borrowings from MidCap credit facilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromLinesOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Lines Of Credit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_RestrictedCashMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted Cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_RestrictedCashMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Cash [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_RestrictedCashMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Restricted cash.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TwoThousandTwentyEquityPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2020 Equity Plan</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TwoThousandTwentyEquityPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Twenty Equity Plan [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TwoThousandTwentyEquityPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two thousand twenty equity plan.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LineOfCreditFacilityMinimumBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit facility, minimum borrowing</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LineOfCreditFacilityMinimumBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Minimum Borrowing Capacity</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LineOfCreditFacilityMinimumBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of credit facility minimum borrowing capacity.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IssuanceOfCommonStockHealingSolutionsEarnoutSettlement_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock - Healing Solutions earn-out settlement</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IssuanceOfCommonStockHealingSolutionsEarnoutSettlement_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Issuance of common stock - Healing Solutions earnout settlement.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Options Outstanding, Aggregate Intrinsic Value, Cancelled</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Intrinsic Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OtherThanNorthAmericaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OtherThanNorthAmericaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Than North America [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OtherThanNorthAmericaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other than North America.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ScheduleOfWarrantActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Warrant Activity</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ScheduleOfWarrantActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of warrant activity.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ContingentConsiderationTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contingent Consideration Type</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ContingentConsiderationTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Contingent Consideration Type [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">PROVISION (BENEFIT) FOR INCOME TAXES</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Income tax provision (benefit)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Expense Benefit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LetterAgreementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Letter Agreements</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LetterAgreementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Letter Agreements [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LetterAgreementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Letter agreements.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Valuation allowance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Taxes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Disclosure [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VestingAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vesting</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VestingAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vesting [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BalanceSheetLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Balance Sheet Location</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BalanceSheetLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Balance Sheet Location [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StipulationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stipulation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StipulationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stipulation Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StipulationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Stipulation.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAccruedLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">All other accruals</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAccruedLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Accrued Liabilities Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Payments to Acquire Property, Plant, and Equipment, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Purchase of assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments To Acquire Property Plant And Equipment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SalesReturnReserve_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sales return reserve</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SalesReturnReserve_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sales Return Reserve</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SalesReturnReserve_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sales return reserve.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Disclosure [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Issuance of common stock, net of issuance costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock, shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Shares New Issues</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarliestTaxYearMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earliest Tax Year</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarliestTaxYearMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earliest Tax Year [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_JulyThirteenTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">July 13, 2021</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_JulyThirteenTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">July Thirteen Two Thousand Twenty One [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_JulyThirteenTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">July 13, 2021.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsFairValueDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsFairValueDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets Fair Value Disclosure [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ScheduleOfPrepaidAndOtherCurrentAssetsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Prepaid And Other Current Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ScheduleOfPrepaidAndOtherCurrentAssetsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Prepaid And Other Current Assets Table [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ScheduleOfPrepaidAndOtherCurrentAssetsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of prepaid and other current assets.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LitigationSettlementCouponsAwarded_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Litigation settlement coupons awarded.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LitigationSettlementCouponsAwarded_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Litigation Settlement Coupons Awarded</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LitigationSettlementCouponsAwarded_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Litigation settlement coupons awarded</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Hierarchy and NAV</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value By Fair Value Hierarchy Level [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PrepaidInventory_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prepaid inventory</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PrepaidInventory_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Prepaid Inventory</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PrepaidInventory_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Prepaid inventory.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill And Intangible Assets Disclosure [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SharesOfRestrictedCommonStockRetiredInConnectionWithVestingShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares of restricted common stock retired in connection with vesting, shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SharesOfRestrictedCommonStockRetiredInConnectionWithVestingShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shares Of Restricted Common Stock Retired In Connection With Vesting Shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SharesOfRestrictedCommonStockRetiredInConnectionWithVestingShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Shares of restricted common stock retired in connection with vesting shares.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AuditorName_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Auditor Name</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AuditorName_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Auditor Name</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedLiabilitiesAndOtherLiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Liabilities And Other Liabilities [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Abstract</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpensesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">General and Administrative</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpensesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Selling General And Administrative Expenses Policy [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Options Outstanding, Weighted Average Exercise Price, Cancelled</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Operating loss as reported</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">OPERATING LOSS</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating income (loss)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Income Loss</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_EventOccursInNineMonthsFollowingClosingDateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Event Occurs in Nine Months Following Closing Date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_EventOccursInNineMonthsFollowingClosingDateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Event Occurs In Nine Months Following Closing Date [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_EventOccursInNineMonthsFollowingClosingDateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Event occurs in nine months following closing date.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Interest rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued interest rate per annum</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Interest Rate Stated Percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BuildingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Building</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BuildingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Building [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentIncreaseAccruedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued, Unpaid interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentIncreaseAccruedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Increase Accrued Interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional paid-in capital</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Additional Paid In Capital Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ProvisionForBarterCredits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Provision for barter credits</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ProvisionForBarterCredits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Provision For Barter Credits</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ProvisionForBarterCredits_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Provision for barter credits.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PaymentsForPurchaseOfFixedAssets_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Purchase of fixed assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PaymentsForPurchaseOfFixedAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Purchase of fixed assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PaymentsForPurchaseOfFixedAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments For Purchase Of Fixed Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PaymentsForPurchaseOfFixedAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Payments for purchase of fixed assets.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StatementScenarioAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Scenario [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HorizonTermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Horizon Term Loan</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HorizonTermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Horizon Term Loan [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HorizonTermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Horizon term loan.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_WithheldOfCashPurchasePricePaymentPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Withheld of cash purchase price payment period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_WithheldOfCashPurchasePricePaymentPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Withheld Of Cash Purchase Price Payment Period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_WithheldOfCashPurchasePricePaymentPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Withheld of cash purchase price payment period.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConcentrationRiskBenchmarkDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Concentration Risk Benchmark</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConcentrationRiskBenchmarkDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Concentration Risk Benchmark [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedProfessionalFeesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued professional fees and consultants</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AmazonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amazon</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AmazonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amazon [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AmazonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amazon.</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CurrentStateAndLocalTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">State</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Facility</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combinations [Abstract]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stockholders Equity</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investor</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ManagedPlatformAsAServiceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Managed PaaS</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionContingentConsiderationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Changes in Carrying Value of Estimated Contingent Earn-Out Liabilities</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Other Comprehensive Income</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByAssetClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset Class</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_MidCapCreditFacilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">MidCap Credit Facility</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ContractWithCustomerRefundLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Contract with Customer, Refund Liability, Total</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ContractWithCustomerRefundLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Contract With Customer Refund Liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpenseCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Prepaid Expense, Current, Total</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CustomerRelationshipsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Customer Relations</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PercentageOfVotingPowerOfCapitalStockOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of voting power of capital stock outstanding.</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Business Acquisitions By Acquisition [Table]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CurrentFederalTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GoodwillLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill [Line Items]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_FebruaryWarrantPennyWarrantAndAdditionalWarrantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">February warrant, penny warrant and additional warrant.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Accounts Receivable</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reclassification of warrants to equity</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments To Additional Paid In Capital Warrant Issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ContractWithCustomerSalesChannelAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Direct</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ContractWithCustomerSalesChannelAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Contract With Customer Sales Channel [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LetterOfCreditMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Letter of Credit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LetterOfCreditMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Letter Of Credit [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockIssuedDuringPeriodShareWarrantsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock related to exercise of warrants, shares</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockIssuedDuringPeriodShareWarrantsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Stock issued during period share warrants exercised.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AllowanceForDoubtfulAccountsAndOther_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allowance for doubtful accounts and other</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AllowanceForDoubtfulAccountsAndOther_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Allowance for doubtful accounts and other.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ClassOfWarrantOrRightsConvertibleConsecutiveTradingDays_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrants consecutive trading days</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ClassOfWarrantOrRightsConvertibleConsecutiveTradingDays_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class Of Warrant Or Rights Convertible Consecutive Trading Days</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PaymentInSharesOfCurrentEventOfDefaultAccelerationAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Payment in shares of current event of default acceleration amount.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allowance for doubtful accounts</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Asset, Tax Deferred Expense, Reserve and Accrual, Accounts Receivable, Allowance for Credit Loss</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SellingAndMarketingExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Selling and Marketing Expense, Total</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ClassOfWarrantExercisableToCommonStockPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrant exercisable to common stock percentage</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Options Outstanding, Weighted Average Exercise Price, Exercised</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_WarrantLiabilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Fair Market Value of Warrant Liability</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_WarrantLiabilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrant Liability [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_WarrantLiabilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Warrant liability.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">International</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Loss From Continuing Operations Before Income Taxes Foreign</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Accumulated Other Comprehensive Income (Loss), Net of Tax, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated other comprehensive income</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income Loss Net Of Tax</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TaxPeriodDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tax Period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TaxPeriodDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tax Period [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Finite lived intangible assets amortization expense after year four.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Amortization Expense After Year Four</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsReceivableNetCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts receivable&#8212;net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsReceivableNetCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Receivable Net Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Common Stock, Shares Outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Common Stock Shares Outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">State</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockholdersEquityTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stockholders Equity [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockholdersEquityTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stockholders Equity [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockholdersEquityTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Stockholders Equity [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of debt issuance costs</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net loss</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">NET LOSS</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">NET LOSS</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income Loss</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AmortizationOfDeferredFinancingCostsAndDebtDiscounts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of deferred financing cost and debt discounts</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AmortizationOfDeferredFinancingCostsAndDebtDiscounts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization Of Deferred Financing Costs And Debt Discounts</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AmortizationOfDeferredFinancingCostsAndDebtDiscounts_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amortization of deferred financing cost and debt discounts.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BasePercentageOfLessersUsedToCalculateCurrentEventOfDefaultAcceleration_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Base percentage used to calculate current event of default acceleration</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BasePercentageOfLessersUsedToCalculateCurrentEventOfDefaultAcceleration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Base percentage of lessers used to calculate current event of default acceleration</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BasePercentageOfLessersUsedToCalculateCurrentEventOfDefaultAcceleration_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Base percentage of lessers used to calculate current event of default acceleration.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PaymentInCashOfCurrentEventOfDefaultAccelerationAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Payment in cash of current event of default acceleration amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PaymentInCashOfCurrentEventOfDefaultAccelerationAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payment In Cash Of Current Event Of Default Acceleration Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PaymentInCashOfCurrentEventOfDefaultAccelerationAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Payment in cash of current event of default acceleration amount.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationContingentConsiderationEntitledToReceiveAmountInCashEqualToShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business combination contingent consideration entitled to receive amount in cash equal to shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationContingentConsiderationEntitledToReceiveAmountInCashEqualToShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Contingent Consideration Entitled To Receive Amount In Cash Equal To Shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationContingentConsiderationEntitledToReceiveAmountInCashEqualToShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination contingent consideration entitled to receive amount in cash equal to shares.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SubstantialDoubtAboutGoingConcernNetCashUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Going concern, net cash used in operating activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SubstantialDoubtAboutGoingConcernNetCashUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Substantial Doubt About Going Concern Net Cash Used In Operating Activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SubstantialDoubtAboutGoingConcernNetCashUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Substantial doubt about going concern net cash used in operating activities.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional Paid-in Capital</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ArrangementsAndNonarrangementTransactionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collaborative Arrangement and Arrangement Other than Collaborative</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ArrangementsAndNonarrangementTransactionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Arrangements And Nonarrangement Transactions [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssued1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock - debt repayment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssued1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued1</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Cash purchase price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Purchase price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Cash And Equivalents</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ShareBasedCompensationAwardTrancheThreeVestingDateTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-based Compensation Award, Tranche Three, Vesting Date 2</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ShareBasedCompensationAwardTrancheThreeVestingDateTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Award Tranche Three Vesting Date Two [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ShareBasedCompensationAwardTrancheThreeVestingDateTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share based compensation award tranche three vesting date two.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Deferred Tax Assets, Operating Loss Carryforwards, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net operating loss carryforwards</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets Operating Loss Carryforwards</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityRegistrantName_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Registrant Name</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityRegistrantName_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Registrant Name</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityFrequencyOfPayments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit facility, frequency of payments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityFrequencyOfPayments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Frequency Of Payments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_CorporateAlternativeMinimumTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Corporate alternative minimum tax</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_CorporateAlternativeMinimumTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Corporate Alternative Minimum Tax</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_CorporateAlternativeMinimumTax_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Corporate alternative minimum tax.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdvertisingExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Advertising cost</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdvertisingExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Advertising Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Liabilities, Fair Value Disclosure, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Allowance for doubtful accounts</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Allowance For Doubtful Accounts Receivable Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Cash and cash equivalents</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CASH</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash And Cash Equivalents At Carrying Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTransitionServicesPayments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Transition services payments</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTransitionServicesPayments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination, recognized identifiable assets acquired and liabilities assumed transition services payments.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Loss Per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maturity date</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement Of Income And Comprehensive Income [Abstract]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInInventories_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Increase (Decrease) in Inventories, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInInventories_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Inventory</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInInventories_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Inventories</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock-based compensation expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Allocated Share Based Compensation Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LitigationSettlementAmountPayableToOtherParty_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Litigation settlement amount payable to other party.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LitigationSettlementAmountPayableToOtherParty_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Litigation Settlement Amount Payable To Other Party</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LitigationSettlementAmountPayableToOtherParty_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Litigation settlement amount payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueOfFinancialInstrumentsPolicy_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value of Financial Instruments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueOfFinancialInstrumentsPolicy_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Of Financial Instruments Policy</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IssuanceOfWarrantsInConnectionWithOffering_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Issuance of warrants in connection with offering.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IssuanceOfWarrantsInConnectionWithOffering_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance Of Warrants In Connection With Offering</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IssuanceOfWarrantsInConnectionWithOffering_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of warrants issued in connection with equity offering</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermLoansPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Term loan non-current portion</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermLoansPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Loans Payable, Noncurrent, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermLoansPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">TERM LOANS</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermLoansPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Loans Payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_NorthAmericaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">North America</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_NorthAmericaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">North America [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsReceivableSale_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts receivable, net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsReceivableSale_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Receivable Sale</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_SecurityExchangeName_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Name of each exchange on which registered</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_SecurityExchangeName_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Security Exchange Name</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Significant Accounting Policies</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Significant Accounting Policies [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PrepaymentFeePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prepayment fee, percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PrepaymentFeePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Prepayment Fee Percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PrepaymentFeePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Prepayment fee, percentage.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Cash used in operating activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided By Used In Operating Activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HomeOfficeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Home Office</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HomeOfficeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Home Office [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HomeOfficeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Home office.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total unrecognized compensation expense related to unvested options, expects to recognize over estimated weighted average period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Options Outstanding, Weighted Average Remaining Contractual Life (Years)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxLiabilitiesPrepaidExpenses_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Prepaid expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxLiabilitiesPrepaidExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Liabilities Prepaid Expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByBalanceSheetGroupingTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value By Balance Sheet Grouping [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByBalanceSheetGroupingTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value By Balance Sheet Grouping [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_CommonStockIssuedSubjectToSatisfyObligationToRepayAccelerationAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock issued subject to satisfy obligation to repay acceleration amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_CommonStockIssuedSubjectToSatisfyObligationToRepayAccelerationAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Issued Subject To Satisfy Obligation To Repay Acceleration Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_CommonStockIssuedSubjectToSatisfyObligationToRepayAccelerationAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Common stock issued subject to satisfy obligation to repay acceleration amount.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DecemberSeventeenTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">December 17, 2021</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DecemberSeventeenTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">December Seventeen Two Thousand Twenty One [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DecemberSeventeenTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">December 17, 2021.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireBusinessesGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total consideration paid by cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireBusinessesGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments To Acquire Businesses Gross</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments And Contingencies Disclosure [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued interest payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Payable Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NonCashIssuanceOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NonCashIssuanceOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Non Cash Issuance Of Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NonCashIssuanceOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Non cash issuance of common stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_EssentialOilsAndRelatedAccessoriesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Essential Oils and Related Accessories</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_EssentialOilsAndRelatedAccessoriesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Essential Oils And Related Accessories [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_EssentialOilsAndRelatedAccessoriesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Essential oils and related accessories.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OverThirtySixMonthsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vesting Over Succeeding 36 Months</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OverThirtySixMonthsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Over Thirty Six Months [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OverThirtySixMonthsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Over thirty-six months.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConsolidationPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principles of Consolidation</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ContractWithCustomerSalesChannelDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contract with Customer, Sales Channel</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionsProFormaRevenue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net revenue pro forma</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_YearTwoEarnOutMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Year Two Earn-Out</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_YearTwoEarnOutMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Year two earn-out.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Inventory</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Stock Options Activity</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Recent Accounting Pronouncements</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReceivablesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts Receivable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReceivablesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Receivables Policy [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EscrowDeposit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Returned deposit for inventory to pay into an escrow account</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, shares outstanding</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Acquisition [Line Items]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Gain (Loss) on Extinguishment of Debt, Total</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ModificationOfWarrantsBetweenEquityAndLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Modification of warrants between equity and liability.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 2</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Inputs Level2 [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Proceeds from Issuance of Long-Term Debt, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Borrowings from term loan</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Issuance Of Long Term Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">INVESTING ACTIVITIES:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided By Used In Investing Activities [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AcceleratedPrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accelerated principal amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AcceleratedPrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accelerated Principal Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AcceleratedPrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Accelerated principal amount.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Estimated Aggregate Amortization Expense of Intangible Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Scheduleof Finite Lived Intangible Assets Future Amortization Expense Table [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Restricted Cash and Cash Equivalents, Current, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">RESTRICTED CASH&#8212;Prepaid and other current assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Cash And Cash Equivalents At Carrying Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_GoodwillPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_GoodwillPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill Policy [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_GoodwillPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Disclosure of accounting policy for goodwill.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_VotingAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Voting Agreement</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_VotingAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Voting Agreement [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_VotingAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Voting agreement.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">COMMITMENTS AND CONTINGENCIES (Note 12)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments And Contingencies</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock shares issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Shares Issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_FollowOnPublicOfferingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Follow-on Public Offering</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_FollowOnPublicOfferingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Follow On Public Offering [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_FollowOnPublicOfferingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Follow-on public offering.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SabbyVolatilityWarrantMasterFundLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sabby Volatility Warrant Master Fund Ltd</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SabbyVolatilityWarrantMasterFundLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sabby Volatility Warrant Master Fund Ltd [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SabbyVolatilityWarrantMasterFundLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sabby Volatility Warrant Master Fund Ltd.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Rate [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PaymentForTransitionServices_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Payment for transition services.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PaymentForTransitionServices_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payment For Transition Services</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PaymentForTransitionServices_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business acquisition, payment for transition services</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IssuanceOfCommonStockInConnectionWithAcquisitions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock in connection with acquisition</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IssuanceOfCommonStockInConnectionWithAcquisitions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance Of Common Stock In Connection With Acquisitions</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IssuanceOfCommonStockInConnectionWithAcquisitions_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Issuance of common stock in connection with acquisition.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CurrentFederalStateAndLocalTaxExpenseBenefitAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CurrentFederalStateAndLocalTaxExpenseBenefitAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Current Federal State And Local Tax Expense Benefit [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minimum [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_FirstPaymentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First Payment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_FirstPaymentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Payment [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_FirstPaymentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First payment.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailApril2021NoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">High Trail April 2021 Note.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailApril2021NoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">High Trail April2021 Note [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailApril2021NoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">High Trail April 2021 Note</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFederalStateAndLocalTaxExpenseBenefitAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFederalStateAndLocalTaxExpenseBenefitAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Federal State And Local Tax Expense Benefit [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Cash Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireBusinessTwoNetOfCashAcquired_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Purchase of Photo Paper Direct, net of cash acquired</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireBusinessTwoNetOfCashAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments To Acquire Business Two Net Of Cash Acquired</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Options Outstanding, Weighted Average Exercise Price, Exercisable as of December 31, 2022</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfLinesOfCredit_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Repayments for MidCap credit facilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfLinesOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments Of Lines Of Credit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BeneficialOwnershipLimitPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Beneficial ownership limit, percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BeneficialOwnershipLimitPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Beneficial Ownership Limit Percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BeneficialOwnershipLimitPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Beneficial ownership limit, percentage.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AcquisitionDateFairValueOfContingentEarnOutLiabilitiesAndInventoryToBeSettledInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acquisition date fair value of contingent earn-out liabilities and inventory to be settled in shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AcquisitionDateFairValueOfContingentEarnOutLiabilitiesAndInventoryToBeSettledInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Acquisition Date Fair Value Of Contingent Earn Out Liabilities And Inventory To Be Settled In Shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AcquisitionDateFairValueOfContingentEarnOutLiabilitiesAndInventoryToBeSettledInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Acquisition date fair value of contingent earn-out liabilities and inventory to be settled in shares.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">STOCKHOLDERS&#8217; EQUITY:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stockholders Equity [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Foreign Currency Transaction Gain (Loss), before Tax, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net loss from foreign currency transactions</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Foreign Currency Transaction Gain Loss Before Tax</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherInventoryInTransit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Inventory in-transit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherInventoryInTransit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Inventory In Transit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine2_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Address Line Two</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine2_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address Address Line2</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherIntangibleAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherIntangibleAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Intangible Assets [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CurrentForeignTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Foreign</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CurrentForeignTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Current Foreign Tax Expense Benefit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Restricted Cash and Cash Equivalents, Noncurrent, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">RESTRICTED CASH&#8212;Other non-current assets</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Foreign Currency</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Grant-Date Fair Value, Forfeited</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockIssuedDuringPeriodSharesCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock, shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockIssuedDuringPeriodSharesCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Shares Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockIssuedDuringPeriodSharesCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Stock issued during period shares common stock.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AwardTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Award Type</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AwardTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Award Type [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationConsiderationTransferredValueOfCertainInventory_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Value of certain inventory</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationConsiderationTransferredValueOfCertainInventory_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Consideration Transferred Value Of Certain Inventory</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationConsiderationTransferredValueOfCertainInventory_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination consideration transferred value of certain inventory.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Member]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total consideration</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Nonoperating Income (Expense), Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">OTHER EXPENSE (INCOME)&#8212;net</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DisclosureOfGoodwillAndIntangibleAssetsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Disclosure of goodwill and intangible assets.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LeaseholdImprovementsAndCapitalLeaseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Leasehold Improvements and Capital Leases</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SecondPaymentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Second Payment</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResearchAndDevelopmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Research and Development Expense, Total</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Business acquisition, assets acquired</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LitigationSettlementAmountAwardedFromOtherParty_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Settlement received</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LitigationSettlementAmountAwardedFromOtherParty_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Litigation Settlement Amount Awarded From Other Party</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash and Cash Equivalents</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AwardDateAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Award Date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AwardDateAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Award Date [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StepAndGoHealthLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Step and Go</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StepAndGoHealthLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Step and Go Health LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Central Index Key</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Central Index Key</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Provision for valuation allowance on deferred tax asset</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_GainLossInConnectionWithSettlementOfEarnout_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Loss in connection with settlement of earn-out</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_GainLossInConnectionWithSettlementOfEarnout_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Gain (loss) in connection with settlement of earnout.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationContingentConsiderationLiabilityNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CONTINGENT EARN-OUT LIABILITY</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationContingentConsiderationLiabilityNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Contingent Consideration Liability Noncurrent</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MajorCustomersAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Customer</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MajorCustomersAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Major Customers [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prior year true-up adjustments</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountingPoliciesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Policies [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ShippingAndHandlingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Shipping and handling cost</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ShippingAndHandlingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Shipping and Handling Costs.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DecemberFourteenTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">December 14, 2021</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DecemberFourteenTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">December 14, 2021.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_FairValueOfWarrantModificationOnExtinguishment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrant modification on extinguishment</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_FairValueOfWarrantModificationOnExtinguishment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value of warrant modification on extinguishment.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisaggregationOfRevenueLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disaggregation Of Revenue [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisaggregationOfRevenueLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disaggregation Of Revenue [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_CookwareKitchenToolsAndGadgetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cookware, Kitchen Tools and Gadgets</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: accumulated depreciation and amortization</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Depreciation Depletion And Amortization Property Plant And Equipment</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrialWarrant_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: High Trail warrant</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrialWarrant_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">High trial warrant.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherIntangibleAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">OTHER INTANGIBLES&#8212;net</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidInsurance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prepaid insurance</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SeniorSecuredNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Senior secured note.</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OtherOfferingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other offering expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OtherOfferingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Offering Expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_OtherOfferingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other offering expenses.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization Consolidation And Presentation Of Financial Statements [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Options Outstanding, Weighted Average Exercise Price, Beginning Balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Options Outstanding, Weighted Average Exercise Price, Ending Balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business combination, contingent consideration earn out amount, maximum</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Contingent Consideration Arrangements Range Of Outcomes Value High</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResearchAndDevelopmentExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Research and Development Expense</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NonCashBarterExchangeOfInventoryForAdvertisingLogisticsCredits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Non Cash Barter Exchange Of Inventory For Advertising Logistics Credits</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NonCashBarterExchangeOfInventoryForAdvertisingLogisticsCredits_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Non-cash barter exchange of inventory for advertising/logistics credits.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prepaid Expenses and Other Current Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Prepaid Expenses And Other Current Assets [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Issuance Costs, Net, Total</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Finance Costs Net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioForecastMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Scenario Forecast</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NotesExtinguishedInExchangeForDebtRepayment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Notes extinguished in exchange for debt repayment.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecurityDeposit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted cash deposit associated with credit facility</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecurityDeposit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Security Deposit</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_JulyTwentyTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">July 20, 2021.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Business acquisition shares issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business combination, consideration transferred, common stock issued</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_NameOfMajorCustomerDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Customer</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Effective Income Tax Rate Reconciliation, Percent, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Effective tax rate</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailDecember2020NoteAndFebruary2021TermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">High Trail December 2020 note and February 2021 term loan.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailDecember2020NoteAndFebruary2021TermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">High Trail December2020 Note And February2021 Term Loan [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailDecember2020NoteAndFebruary2021TermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">High Trail December 2020 Note and February 2021 Term Loan</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfGoodwillTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Goodwill [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ClassOfWarrantsOrRightsExercisableTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrants term</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ClassOfWarrantsOrRightsExercisableTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Class of warrants or rights exercisable term.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_CashDepositsAtFinancialInstitutionsInExcessOfInsuredAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash deposits at financial institutions in excess of insured amount</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Property, Plant and Equipment, Gross, Ending Balance</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property Plant And Equipment Gross</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GoodwillAcquiredDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additions</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SecuritiesPurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Securities Purchase Agreement</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SecuritiesPurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Securities purchase agreement.</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LineOfCreditFacilityFinancialCovenantMinimumLiquidityRequirementInCashOnHand_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of credit facility financial covenant minimum liquidity requirement in cash on hand.</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLossCarryforwardsLimitationsOnUse_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Description of ownership limitations</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Forfeiture of restricted common stock</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LineOfCreditFacilityAggregatePrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of credit facility aggregate principal amount.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseholdImprovementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Leasehold Improvements</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailDebtRepaymentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">High Trail debt repayment.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_LocalPhoneNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Local Phone Number</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ExerciseOfPrefundedWarrantsShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Exercise of prefunded warrants shares.</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_CommitmentAndContingenciesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitment And Contingencies [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_CommitmentAndContingenciesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitment And Contingencies [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_CommitmentAndContingenciesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Commitment and contingencies.</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Basic and Diluted Net Loss per Share</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Options vesting period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ShareBasedCompensationAwardTrancheFourVestingDateOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share based compensation award tranche four vesting date one.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Disclosure [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share Based Compensation Arrangement By Share Based Payment Award [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BasisOfAccountingPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basis of Presentation</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Options Outstanding, Number of Options Exercisable, Shares, as of December 31, 2022</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AussieHealthMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aussie Health</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AussieHealthMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Aussie Health.</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AussieHealthAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Aussie health assets.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockIssuedDuringPeriodValueCommonStockUponExerciseOfStockOptionGrants_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock upon exercise of stock option grants</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Statement Location</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Options Outstanding, Number of Options, Shares, Ending Balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share price</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IncomeTaxRateReconciliationStockCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock compensation</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IncomeTaxRateReconciliationStockCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Income tax rate reconciliation stock compensation.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Activity of the Level 3 Liabilities Carried at Fair Value on a Recurring Basis</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Liabilities Measured On Recurring Basis [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Award vesting date</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share-based compensation arrangement by share-based payment award vesting date.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Name</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Fiscal Year Focus</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Table [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Prepaid Expense And Other Assets Current [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Warrant or Right</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PurchaseObligation_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Purchase Obligation, Total</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Earnings Per Share, Basic, Total</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share Basic</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherPrepaidExpenseCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NumberOfInstallments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of installments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NumberOfInstallments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Installments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NumberOfInstallments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of installments.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GoodwillGross_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Gross Carrying Amount</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GoodwillGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill Gross</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ASSETS</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LineOfCreditFacilityCovenantMinimumLiquidityRequirementInUnrestrictedCashOnHand_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Covenant Minimum Liquidity Requirement In Unrestricted Cash On Hand</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_LineOfCreditFacilityCovenantMinimumLiquidityRequirementInUnrestrictedCashOnHand_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of credit facility covenant minimum liquidity requirement in unrestricted cash on hand.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedWorkingCapitalAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Working capital adjustment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedWorkingCapitalAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Working Capital Adjustment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedWorkingCapitalAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination, recognized identifiable assets acquired and liabilities assumed, working capital adjustment.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">RECONCILIATION OF CASH AND RESTRICTED CASH</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GrossProfit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">GROSS PROFIT</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationContingentConsiderationArrangementsEarnOutMaximum_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business combination contingent consideration arrangements earn out maximum</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationContingentConsiderationArrangementsEarnOutMaximum_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Contingent Consideration Arrangements Earn Out Maximum</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_BusinessCombinationContingentConsiderationArrangementsEarnOutMaximum_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination contingent consideration arrangements earn out maximum.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Prepaid and other current assets</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Prepaid Expense And Other Assets Current</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesIssuedPricePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares issued, price per share</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxReconciliationOtherReconcilingItems_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount, Total</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate principal amount</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonvestedRestrictedStockSharesActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Restricted Stock Activity</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonvestedRestrictedStockSharesActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Nonvested Restricted Stock Shares Activity Table [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net deferred tax assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets Net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net loss</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Profit Loss</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CURRENT ASSETS:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets Current [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Amortization Expense Year Four</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SubstantialDoubtAboutGoingConcernNetLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Going concern, net loss</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SubstantialDoubtAboutGoingConcernNetLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Substantial Doubt About Going Concern Net Loss</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SubstantialDoubtAboutGoingConcernNetLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Substantial doubt about going concern net loss.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of fair value in excess of carrying amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reporting Unit Percentage Of Fair Value In Excess Of Carrying Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Amortization Expense Year Two</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrants to purchase shares, exercise price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class Of Warrant Or Right Exercise Price Of Warrants Or Rights1</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_InsidersMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Insiders</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_InsidersMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Insiders [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_InsidersMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Insiders.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Components of Deferred Tax Assets and Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Deferred Tax Assets And Liabilities Table [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxLiabilitiesOther_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Other</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxLiabilitiesOther_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Liabilities Other</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Hierarchy and NAV</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurements Fair Value Hierarchy [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDefaultShorttermDebtDescriptionOfNoticeOfDefault_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Event of default description</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDefaultShorttermDebtDescriptionOfNoticeOfDefault_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Default Shortterm Debt Description Of Notice Of Default</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IntangibleAssetsFiniteLivedPolicy_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Intangible Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IntangibleAssetsFiniteLivedPolicy_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Intangible Assets Finite Lived Policy</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Changes in assets and liabilities:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Operating Capital [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfNotesPayable_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Repayment of note payable to Smash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfNotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments Of Notes Payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party Transaction [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LinesOfCreditCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total MidCap Credit Facility - December 2021</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LinesOfCreditCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit facility</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LinesOfCreditCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lines Of Credit Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_InventoriesAndCostOfGoodsSoldPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Inventory and Cost of Goods Sold</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_InventoriesAndCostOfGoodsSoldPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Inventories And Cost Of Goods Sold Policy [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_InventoriesAndCostOfGoodsSoldPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Inventories and cost of goods sold.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DisclosureOfGoodwillAndIntangibleAssetsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disclosure Of Goodwill And Intangible Assets [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DisclosureOfGoodwillAndIntangibleAssetsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disclosure Of Goodwill And Intangible Assets [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DisclosureOfGoodwillAndIntangibleAssetsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Disclosure of goodwill and intangible assets.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Domestic</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Loss From Continuing Operations Before Income Taxes Domestic</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CoverAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cover [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConcentrationRiskPercentage1_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Percentage of concentration of credit risk</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConcentrationRiskPercentage1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Concentration Risk Percentage1</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ProductsAndServicesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Product and Service</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ProductsAndServicesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Products And Services [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Useful life (in years)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Acquired Finite Lived Intangible Assets Weighted Average Useful Life</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ExciseTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Excise tax</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ExciseTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Excise Tax</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ExciseTax_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Excise tax.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Shares, Vested</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InventoryFinishedGoods_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Inventory on-hand</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InventoryFinishedGoods_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Inventory Finished Goods</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GoodwillImpairmentLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Impairment loss on goodwill</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GoodwillImpairmentLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill Impairment Loss</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AccreditedPurchasersMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accredited Purchasers</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AccreditedPurchasersMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accredited Purchasers [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_AccreditedPurchasersMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Accredited purchasers.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CURRENT LIABILITIES:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities Current [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncompeteAgreementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-Competition Agreement</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncompeteAgreementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noncompete Agreements [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ReclassificationOfWarrantsToLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reclassification of warrants to liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ReclassificationOfWarrantsToLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reclassification Of Warrants To Liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ReclassificationOfWarrantsToLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Reclassification of warrants to liability.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maximum [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SPAAmendmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SPA Amendment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SPAAmendmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">S P A Amendment [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SPAAmendmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">SPA amendment.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Total Stock-based Compensation Expense by Function</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ExerciseOfPreFundedWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exercise of prefunded warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ExerciseOfPreFundedWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Exercise of pre-funded warrants.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ExerciseOfPreFundedWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Exercise Of Pre Funded Warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ExerciseOfPreFundedWarrants_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Exercise of prefunded warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Cash used in investing activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided By Used In Investing Activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Options Outstanding, Number of Options, Exercised, Shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exercise of stock options, shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Shares Stock Options Exercised</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ContingentConsiderationEarnOutPayments_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Payment of contingent earn-out liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ContingentConsiderationEarnOutPayments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business acquisition, earn-out payments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ContingentConsiderationEarnOutPayments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Contingent Consideration Earn Out Payments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ContingentConsiderationEarnOutPayments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Contingent consideration earn-out payments.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDefaultShorttermDebtAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument default amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDefaultShorttermDebtAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Default Shortterm Debt Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfInventoryCurrentTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Inventory</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfInventoryCurrentTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Inventory Current Table [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 3</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Inputs Level3 [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UseOfEstimates_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Use of Estimates</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PersonalProtectiveEquipmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Personal Protective Equipment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PersonalProtectiveEquipmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Personal Protective Equipment [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_PersonalProtectiveEquipmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Personal protective equipment.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, basis spread on variable rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Basis Spread On Variable Rate1</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ZeroPercentageCouponSeniorSecuredPromissoryNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Zero percentage coupon senior secured promissory note.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Cash_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Cash_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IssuanceOfWarrantsToHighTrailValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance Of Warrants To High Trail Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_IssuanceOfWarrantsToHighTrailValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Issuance of warrants to High Trail value.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedPayrollTaxesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal payroll taxes payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedPayrollTaxesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Payroll Taxes Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsReceivableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts Receivable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsReceivableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Receivable [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exercise of stock options</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Value Stock Options Exercised</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockIssuedDuringPeriodValueCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockIssuedDuringPeriodValueCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Value Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockIssuedDuringPeriodValueCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Stock issued during period value common stock.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segment Information</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting Policy Policy [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockBasedCompensationExpenseChangeInAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change, amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockBasedCompensationExpenseChangeInAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Based Compensation Expense Change in Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_StockBasedCompensationExpenseChangeInAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Stock based compensation expense change in amount.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailDecember2020AndFebruary2021NoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">High trail December 2020 and February 2021 note.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailDecember2020AndFebruary2021NoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">High Trail December2020 And February2021 Note [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailDecember2020AndFebruary2021NoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">High Trail December 2020 and February 2021 Note</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ProceedsFromPaymentsForStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from exercise of stock options</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ProceedsFromPaymentsForStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Payments For Stock Options Exercised</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ProceedsFromPaymentsForStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from payments for stock options exercised.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property and equipment, estimated useful life</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property Plant And Equipment Useful Life</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NonCashConsiderationPaidToContractors_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-cash consideration paid to contractors</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NonCashConsiderationPaidToContractors_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Non Cash Consideration Paid To Contractors</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_NonCashConsiderationPaidToContractors_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Non-cash consideration paid to contractors.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HealingSolutionsAndPhotoPaperDirectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Healing Solutions and Photo Paper Direct.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HealingSolutionsAndPhotoPaperDirectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Healing Solutions And Photo Paper Direct [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HealingSolutionsAndPhotoPaperDirectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Healing Solutions and Photo Paper Direct</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Amortization Expense Year Three</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, shares authorized</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Shares Authorized</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermDebtTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Short-Term Debt, Type</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermDebtTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Short Term Debt Type [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ContingentEarnOutConsiderationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated Fair Value of Contingent Earn-out Considerations</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ContingentEarnOutConsiderationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Contingent Earn Out Consideration [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ContingentEarnOutConsiderationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Contingent earn out consideration.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ShareBasedCompensationAwardTrancheThreeVestingDateOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-based Compensation Award, Tranche Three, Vesting Date 1</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ShareBasedCompensationAwardTrancheThreeVestingDateOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Award Tranche Three Vesting Date One [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_ShareBasedCompensationAwardTrancheThreeVestingDateOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share based compensation award tranche three vesting date one.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_TradingSymbol_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trading Symbol(s)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_TradingSymbol_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trading Symbol</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TwoThousandTwentyTwoInducementEquityIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two thousand twenty two inducement equity incentive plan.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TwoThousandTwentyTwoInducementEquityIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Twenty Two Inducement Equity Incentive Plan [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_TwoThousandTwentyTwoInducementEquityIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022 Inducement Equity Incentive Plan</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ValuationAndQualifyingAccountsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Valuation And Qualifying Accounts [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsOther_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsOther_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets Other</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DiscountAssociatedWithIssuanceOfWarrants_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: discount associated with issuance of warrants</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_DiscountAssociatedWithIssuanceOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Discount associated with issuance of warrants.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SubstantialDoubtAboutGoingConcernCashAndCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Going concern, cash and cash equivalents</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SubstantialDoubtAboutGoingConcernCashAndCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Substantial Doubt About Going Concern Cash And Cash Equivalents</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SubstantialDoubtAboutGoingConcernCashAndCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Substantial doubt about going concern cash and cash equivalents.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BalanceSheetLocationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Balance Sheet Location</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BalanceSheetLocationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Balance Sheet Location [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_FirstAnniversaryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vesting on First Anniversary</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_FirstAnniversaryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Anniversary [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_FirstAnniversaryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First anniversary.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">COMPREHENSIVE LOSS</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SettlementAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Settlement agreement.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_SettlementAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Settlement Agreement [Member]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Accounts Payable, Current, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts payable</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Loans Payable, Current, Total</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PlanNameAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Plan Name</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_MaySeventeenTwoThousandAndTwentyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">May Seventeen Two Thousand And Twenty [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_MaySeventeenTwoThousandAndTwentyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">May 17, 2020.</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ater_HighTrailLoanDecember2020NoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">High trail loan December 2020 note.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConcentrationRiskTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Concentration Risk Type</link:label>
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