We’ve detected that your app is not acknowledging all in-app purchases or subscriptions. Starting with Billing Library 2.0, all purchases must be acknowledged within 3 days or they will be automatically refunded.
we are facing above mention issue in which Unity IAP version SDK above issue is solved ?
What version of IAP are you using? I might recommend to start with the Sample IAP Project v2 here https://discussions.unity.com/t/700293/3 . We have heard of this issue with Codeless IAP, you should consider Scripted IAP instead (like in the sample)