Hello Apple Developer Support, We are experiencing an issue with TestFlight Internal Testing. Our internal testers can see the app and the assigned build in the TestFlight app, but when they try to install it, the installation fails with the following error: "Could not install [App Name]. The requested app is not available or doesn't exist." This issue happens with Internal Testing, so Beta App Review should not be involved. We have already checked the following: The build was uploaded successfully through Xcode using App Store Connect distribution. The build processing is completed. The build is assigned to the correct Internal Testing group. The testers are added as App Store Connect users and have access to the app. The app appears in TestFlight for the testers. Agreements, Tax, and Banking do not show any pending actions. Export Compliance / Missing Compliance does not show any pending actions. The issue happens on multiple devices. We have tried removing and reinstalling TestFlight, and uploading a new build number, but the issue still occurs. App details: App Name: WearNow AR Try-On Bundle ID: com.yakovchuk.wearnow Apple Developer Team ID: 6G4QX44Y4A Could you please check whether there is an account-level, app-level, or TestFlight backend issue that prevents this build from being installed by internal testers? This looks similar to multiple recent Apple Developer Forums reports where the app is visible in TestFlight, but installation fails with "The requested app is not available or doesn't exist." Thank you.