Glad to hear we are not alone. Out of curiosity, do you have a TestFlight build in App Store Connect that is messed up? This all seemed to start with a build that was released, that in App Store Connect I'm not able to "Expire Build". And, when I click on it, I can only see the "Build Metadata" info, but can't access the "Test Information". No idea if that is related, but the issue seemed to start with that messed up build.
Topic:
App Store Distribution & Marketing
SubTopic:
TestFlight