I can login to one gmail, but when I try to add another account and am prompted to login it shows the 2 factor authentication. At this point I either get the code, but the site doesn't advance to the page for me to type it in, or it never sends the code. Now I know you're probably thinking it google, but I can correctly add my 6 account on opera, chrome, and safari. I've already tried to refresh firefox. I also tried uninstalling and removing all registry files to no avail. I tried with my ad blocker and vpn on as well as off. I'm on a windows 10 desktop and I just installed a fresh copy of windows as well as firefox and still same issue. Please help if anyone has any Idea what's going on!