This has now been fixed if you download iOS 18.1 Beta. I just added my Yahoo account ... went to the same white screen, but 2 secs later it allowed me to enter my password and now Apple Mail has my Yahoo account back.
Just spent another hour on the phone with Rogers. After speaking with L2 tech support yet agin, I convinced the Rogers rep that this is very likely an authentication issue on their servers. I'll keep this short, but I told them I've already spent h...
I called Rogers and spoke to Level 2 tech last Wednesday. After an hour of trying, he said he'd work on it and get back to me the next day. Of course, here we are days later and no contact. Welcome to Rogers. They should have been all over this.
I just spent a almost an hour the phone with Apple. They said they have no other reports of this (Apple rep was in the U.S.). I shared that I have at least a dozen other customers with exactly the same issue (after iOS 18 can't add Yahoo email addr...
I have the same issue ... first on iPhone ios18 and then once my new iPad upgraded to ios18 I have the same problem. I too spent 2 hours on the phone with Rogers. While the rep said he'd do more investigating, he also said "Apple Mail is a 3rd part...