Change 8.0 to 11.0 worked for me

while (WidgetsBinding.instance.lifecycleState != AppLifecycleState.resumed) { await Future.delayed(Duration(milliseconds: 400)); } To check if the TestFlight window has disappeared before triggering the ATT prompt. After this, the app update has been approved.

Does anyone else have this issue right now? Almost half of our active subscribers have just disappeared.

I'm facing the same issue. Hopefully, it will be fixed soon.