The issue with App Center Distribute has been resolved and all operations are back to normal now. Thanks for bearing with us!
Posted 14 days ago. Apr 09, 2019 - 09:13 UTC
The engineering team have been working hard and have deployed a fix for the Apple App Store and TestFlight internal. You can still experience outage when publishing to TestFlight external.
Posted 19 days ago. Apr 04, 2019 - 08:46 UTC
App Center is experiencing issues distributing to the Apple App Store. As a consequence, uploads to the Apple App Store might fail. We apologize for the inconvenience while we work to resolve this issue.