We are seeing the same thing... I just set these up - hate to have to wipe them and start over. Ugh... Even if I log in with a managed Apple ID, I get the "this apple id can't be used to make purchases" message. I wiped one and I am getting the same behavior...
We are running Jamf Pro in the Cloud which shows a version of 10.7.1. We just ran into an issue where a new iPhone 8 downloaded the iOS 12 update during the MDM registration process and now the phone is stuck with a message stating an "Invalid Configuration Profile" and will not allow us to continue or to reset the phone back to factory. On other phones, if we apply the iOS 12 update after the registration process, there is no issue. I'm not sure if there is anything we can do other than seeing if Apple will help us reset the iOS on this device, since it is brand new and we have the receipt. Any insight would be appreciated.
We just updated a few devices to iOS 12 and we're running 10.7. On our devices that run iOS 12 Jamf's Self Service App cannot connect to server. The App still connects on devices running iOS 11.
I am working under the theory that the Apple apps on the iPads from the factory are the ones available from the App Store. Apps available from the Volumne Purchase Program do not ask for an Apple ID.
I have been deleting apps that ask for the ID and "reinstalling" the app from Self Service.