I have an app that is publically available for iPad. We also have a beta version that is distributed through TestFlight. Both are nearly identical and both offer in-app purchases.
The TestFlight version continuously pops a system dialog whenever the app is launched or comes out of the background. The message is:
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Sign In to iTunes Store
Enter the password for your Apple ID.....
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I don't get this message with the public version of the app.
There is something different going on with TestFlight apps or is it expected behavior for a TestFlight app to continuously ask for a sign-in? I can eithe sign in or tap Cancel. Either way, the result is the same.
I should mention that I am signed into iTunes & App Store in Settings with the same Apple ID that is requested by the dialog.
Thanks,
George