Could not install [App] The requested app is not available or doesn't exist. In TestFlight

I uploaded a build to testflight and released it to Internal testers, however when the testers tried downloading the app a alert dialog shows the following:

Could not install [App] The requested app is not available or doesn't exist.

Also tried to submit it via external testers but getting another error.

Additional info:

This is the first time uploading this app so it's not rejected or removed from saleNo pending agreement that needs to be accepted

Facing the same issue, were you able to solve it?

Could not install [App] The requested app is not available or doesn't exist. In TestFlight
 
 
Q