TestFlight Not Working – "TestFlight Unavailable" on iPhone 15

I'm having trouble launching TestFlight on my iPhone 15. As soon as I open the app, I see the welcome screen, but then I immediately get the following error message:

TestFlight Unavailable TestFlight is temporarily unavailable. Try again.

I can't proceed further – after tapping "OK," the message disappears, but TestFlight remains unusable. I've tried:

Restarting my iPhone Uninstalling and reinstalling TestFlight Checking my internet connection (both Wi-Fi and LTE) Signing out and back into my Apple ID The issue persists. Is anyone else experiencing this? Is this a known issue on Apple's end?

Attaching a screenshot for reference.

Device: iPhone 15 iOs: 18

Any help would be appreciated!

Any chance you are using managed account? https://support.apple.com/en-ca/guide/deployment/depdc4ba8d82/web

TestFlight Not Working – "TestFlight Unavailable" on iPhone 15
 
 
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