two factor verification iPod touch and iPhone 4s
The entry boxes for two factor verification do not show on the iPod touch or the iPhone 4s
Found the problem "2-factor authentication, not 2-step verification. 2-factor authentication cannot be used with an iPhone 4 since it requires a device capable of running iOS 9 or newer." From Micheal Black
The suggested solution of turning off authentication and turning on verification is not possible. I am going to set up a new apple id for the two older devices see if that works otherwise they are useless to access apps