@DTS Engineer same issue from my developer account , i submitted new feedback with organization account as well, and this is the feedback number : FB24633426. , its really serious issue, i appreciate your help with this

App: Prizely, Apple ID 6761530931. Builds 2.1.0 (10) show Processed / Ready to Submit in App Store Connect, but every install from TestFlight fails with "Could not install Prizely. The requested app is not available or doesn't exist." It fails for the account holder and for all internal and external testers; internal testers do not see the app in TestFlight at all. New builds, new testers, new groups, deleting the app and reinstalling TestFlight made no difference. Pricing and Availability and all agreements are in order. TestFlight worked normally in April 2026 before that. Feedback filed: FB24627341 (2 Sep 2026)