Apple ID says it doesn't recognize your finger in the morning
See this article on Touch ID. It says:


  If your passcode hasn't been used to unlock in six days, and Touch ID
  hasn't been used to unlock in six hours, you'll need to enter your
  passcode or password to re-enable it.


So you should expect to re-enter your password around once a week. It's a good idea, because otherwise you might not use your password for months and forget it.