Log in not working in Firefox

Hello, I usually use Firefox as my default browser and up until recently, have not had a problem using the site. However, lately when I try to log in to the site, it just takes me back to the main page, still logged out. If it was a matter of the wrong password or email, I would have gotten a warning that it was wrong, but nothing of the sort happened. I went to Google chrome and tried there and it worked fine. So, I'm not sure what's going on with Firefox for this to happen.