When I test in-app purchases via Sandbox Testers and TestFlight, it works fine. But when review team test IAP, purchase is failed - "invalid product identifier" error. After rejecting by review team first time, I tested IAP via Sandbox Testers and TestFlight again and took a video for the prodess of testing respectively. And I re-submitted app to Review Team. But app was rejected again and Review Team say "We found that your in-app purchase products exhibited one or more bugs". So, I checked everything related to IAP again overall - agreements, product information, receipt validation and so on. Agree to the latest Apple Developer Program License Agreement. Complete all the financial agreements as described in the Agreements, Tax, and Banking Overview. Use an explicit App ID. Clear the in-app purchases for sale in App Store Connect. Modified in-app purchases are available to the App Store servers. The product identifier specified in App Store Connect matches the identifier used in your app. But I can not find the problem. I don't know what to do anymore and I am frustrated and panic. Please help me.