TestFlight: "The requested app is not available or doesn't exist" for all testers and both apps; support not responding

Since October 23, no TestFlight build of either of my apps can be installed by any tester.

  • Apps: Фургон (com.vahe.furgon, Apple ID 6823574650) and Hayway
  • Error on install: "The requested app is not available or doesn't exist."
  • Affects me and a newly added internal tester with a different Apple ID, on several iPhones
  • Builds are processed and show "Testing" in App Store Connect; a newly uploaded build (0.4 (5)) has the same problem
  • Adding a build to an external group fails with "An error occurred. Try again later."
  • Users and Access shows: "There was a problem restoring invitations for users."
  • The same builds install and run fine via Xcode
  • The latest Program License Agreement was accepted on Oct 30; issue persists

This happened right after I expired several older builds in both apps. It looks like the BETA_CONTRACT_MISSING issue other developers reported.

Support cases 103006467776 and 103016839629 have had no response for over two weeks. Could someone from Apple please take a look? Team ID: ZCXA5U6D2X.