I am a developer trying to test an iPad only app on my Mac since I don't own an iPad myself. The TestFlight keeps failing saying "This invitation has been revoked or is invalid. Request a new invitation from the developer." even tho that's not the case.
I tried several ways to resolve this, like resending invites, removing and re-adding the testers, adding them both as internal and individual testers, etc. Nothing seem to work.
It does work in the physical device of the "Account Holder", i.e. my client.
As a last resort I logged out of my main Apple ID, logged in with a new one, and added that one as. tester, it accepted the invitation this time but the app kept crashing when I tried to open it (this doesn't happen on the physical device).
This is becoming quite problematic since he's finding some bugs that I don't see in development and can't test myself.