I can't login!!

I'm on the browser version and an error message says it can't find my user name, but I have not changed it and the log in page is very different than in the past. I have no way to contact support for want of a valid email address. Whatever shall I do?

I just updated my s7 galaxy. Cant log in. Please fix it. I can not log in anymore.

Me either but dont get any response..