Getting the same error "Some of the information required to submit your build for external testing is missing." when I try to add new or existing testers to a build under TestFlight. This has been happening for at least the last 2 days and I cannot proceed with any new builds for TestFlight due to the issue.
MagicAndWires
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Same issue here now for days. We are also unable to access our app via app store connect iOS app.