Unable to Login with Firefox

I recently reinstalled Firefox on my pc after the browser kept crashing on me, but when I try to login, it doesn't let me. I still get "sign in" at the top. I have the same addons settings as I did when before this problem happened, no adblocking, all javascript enabled for this site, third party cookies accepted, etc. I wonder does anybody else have this problem. 

Firefox version? 

Newest version of course.

Nevermind, had to reinstall again.