I have recently updated my iPad mini 2 to iOS 9.1 and every time I turn it off, or do a hard restart, it prompts me to put in my Apple ID password. After I type it in, it refuses to verify.
Thanks in advance,
Ask Different is a question and answer site for power users of Apple hardware and software. It only takes a minute to sign up.Sign up to join this community
It sounds like this is a bug. You should probably report this to Apple Support.
Try to sign out of you Apple ID, then force restart by holding down the Sleep and Home buttons until the screen goes dark, and release. Afterwards sign back in to your Apple ID.
I do not guarantee this bug will go away, but you should give this a shot.