loop when signing in to Itunes & App Store
Anyone out there know how to solve a problem with signing in?
In the password sign in window, whenever i enter my details the window disappears, and then reappears empty a few seconds later the same sign in box reappears empty with another prompt.
I know my ID is correct as I *** log in to iCloud with no problems.
I noticed the problem today and I hadn't changed any details. I have several devices - a MacMini, iMac, and laptop, all with different OS versions, and the problem is the same across all machines - this suggests the problem is not attached to my hardware but maybe with a server or files on the apple servers. Advise so far from Apple advisors is to set up a new user and try again, but the problem persists. Any thoughts would be welcome. Thanks.
MacBook Pro 15″, macOS 10.14