There had been no problem logging into iCloud since I cancelled two-factor authentication last year. I could log in to my iCloud account email with no problem up until last night.
But this morning, I got the NO: Authentication failed message again. When I tried to re-input the login data, I again got the same message.
I am not able to see any reason for this. I had changed nothing.
I expect you'll say this is a fault on Apple's side, but if they have changed something, I have not heard about it.
Anybody else with the same problem?