This issue started for me earlier this week. Log in doesn't work. Have spent two hours on the phone with Apple trying just about everything. I can log in to the mobile app, use safari on my iPhone to go to the site and also log in an log in from a friends Mac using safari.
I've tried Chrome, private browsers sessions, private relay isn't on, no VPN (dont have anyway), etc.... DL is no help as they say they are not aware of any issues being reported.
I have Googled and see so many treads in the last year with these issues but no solutions to the problem. I'm at a loss.