I'm unable to add a build to an External Testing group in TestFlight. When I click "Add Build" on the group, select the build, fill in the "What to Test" field, and click Submit for Review, I get:
"There was an error processing your request. Please try again later."
App: Glimpse Meet people (com.salarumer.glimpse) Build: 1.0.0 (14), uploaded Jul 4 2026 Binary State: Validated
The build exists in the iOS builds list and is fully validated — the error only occurs on the final "What to Test" submission step when adding it to an external group.
The issue is not isolated to this app — I'm seeing the exact same error on a separate app that is already published to the App Store. This rules out a build or metadata issue on my end.
I've tried:
- Approaching from both the group page (Add Build) and the build detail page
- Different browsers (Chrome, Safari, incognito)
- Waiting several days (issue started ~Jul 4 2026)
- Contacted Apple Developer Support (Case ID: 102933411126, no reply in 7 days)