Same with my builds. On June 6, a new build was uploaded, and all previous builds were marked as “expired.” I can't assign the new build or any later builds to a test group; it gives an error "There was an error processing your request. Please try again later." No any other explanation. All compliance docs and tax is Active.
Support cases IDs:
102935406632, 102935412015
Topic:
App Store Distribution & Marketing
SubTopic:
TestFlight