Same issue here. On Oct 7, 2026 at 13:11:55 UTC every TestFlight build of all eight apps on our team expired within three seconds. Since then 30+ new builds have processed to VALID and been added to our internal group, and every one fails on device with "The requested app is not available or doesn't exist." The device log shows the install request returning 404, then "Error Downloading Install Data". Filed as FB25300384 with a sysdiagnose, Team ID and App IDs included. We have also opened a Developer Support case. @Albert , could you route this to the TestFlight team? Thank you.