Cannot update or install apps from Testflight

Hello, We're having a problem from the past week with installing / updating all our apps from Testflight. All the testers get this error message after tapping the "Install" or "Update" button: "Could not install <AppName>. The requested app is not available or doesn't exist". Can you please help investigate and let us know why this issue occurs? Thank you!

Note: We're using Xcode 15.2 both locally and on CI through Xcode Cloud

Is your problem solved? I've been sending builds all day, but none of them are uploaded to the phone.

Cannot update or install apps from Testflight
 
 
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