Google billing library cancelled all subscriptions

Question

I'm using Google's Billing library to make subscriptions inside my app.

After ~~ 3 days google play has refund every subscription of my users, why did it was?

Some code with activity, which make subscriptions:

    private var billingClient: BillingClient? = null
    private val purchasesUpdateListener = PurchasesUpdatedListener { billingResult, purchases ->
        val isSuccessResult = billingResult.responseCode == BillingClient.BillingResponseCode.OK
        val hasPurchases = !purchases.isNullOrEmpty()
        if (isSuccessResult && hasPurchases) {
            purchases?.forEach(::confirmPurchase)
            viewModel.hasSubscription.value = true
        }
    }

    private fun confirmPurchase(purchase: Purchase) {
        val consumeParams = ConsumeParams.newBuilder()
            .setPurchaseToken(purchase.purchaseToken)
            .build()
        billingClient?.consumeAsync(consumeParams) { billingResult, _ ->
            if (billingResult.responseCode != BillingClient.BillingResponseCode.OK) {
                //all done
            }
        }
    }
 override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
   
        billingClient = BillingClient.newBuilder(this)
            .setListener(purchasesUpdateListener)
            .enablePendingPurchases()
            .build()

        connectToBillingService()
    }

    private fun connectToBillingService() {
        billingClient?.startConnection(this)
    }

    private fun getPurchases(): List<Purchase> {
        val purchasesResult = billingClient?.queryPurchases(BillingClient.SkuType.SUBS)
        return purchasesResult?.purchasesList.orEmpty()
    }

    override fun onBillingSetupFinished(result: BillingResult) {
        if (result.responseCode == BillingClient.BillingResponseCode.OK) {
            updateSkuMap()
        }
    }
}

Answer 1

Because you're using Play Billing Library 2.0 or above. Starting from Play Billing Library 2.0, all purchases must be acknowledged within three days. Failure to properly acknowledge purchases will result in purchases being refunded. Checking Play Billing Library v2.0 release notes and Processing Purchases for more details.