Same just happened to me.. My login timed out and when I tried to log in again, got the "something went wrong error".. Was able to log in with Edge, but don't want to use 2 browsers.. Opened Firefox in a "private window" and was able to log in but still would be 2 browser windows and private windows don't keep history, tabs, etc. Googled and found a page that suggested starting Firefox in "troubleshoot mode" (under the Help dropdown).. Tried to log in that way and had no issues.. Exited troubleshoot mode, browser restarted (had stayed on the att.net email page and it opened with me logged in. Not sure what they did to screw it up, but back in now.. Guess will find out in 2 weeks if the problem is still there when my login times out again
