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:***************Sign In to iTunes StoreEnter the password for your Apple ID.....***************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