I'm not surprised. Apple ID seems completely broken to me, even when I just tried to set up a new MacBook 4 weeks ago:
Create an account via the settings page? Had to contact support because my phone number + email got stuck in some "halfway activated but can't log in" state.
Sign into the App Store + downloading some software? Got stuck in some broken form that wouldn't let me enter payment information. Had to crawl through reddit threads about how to work around this mess, just to be able to use the App Store.
Can't help but wholeheartedly agree. You would think that the bit where you actually gave them money would be buttery smooth, but each one of those interfaces is riddled with bugs and yank. Every time I have the misfortune of needing to touch them, I know I'm in for a world of pain.
Create an account via the settings page? Had to contact support because my phone number + email got stuck in some "halfway activated but can't log in" state.
Sign into the App Store + downloading some software? Got stuck in some broken form that wouldn't let me enter payment information. Had to crawl through reddit threads about how to work around this mess, just to be able to use the App Store.