Lol Jesus my yahoo mail account... Ugh. The thing is a relic of the first domain name I bought, and I just didn't change it.
Yahoo is AWFUL. Every month or so at random intervals it stops accepting my password. Just... refuses. This happens for no reason at all, and is not fixable without changing the password. Even then, it can be a pain to log in to change it. There wasn't even any rhyme or reason to it, it never slowed or increased pace, jus every month or so change the password to log in at all. Oh, and you can't change it to the same password, because it still somehow does recognize it as the original when you try to change it. Go figure.
The only solution I came up with for this was to forward it through iCloud. That solved the issues.
Yahoo mail is just garbage.