Can't log in to Firefox Account for Sync

Hello, When I try to log in to my Firefox Sync account with my email address ( morgan@eml.cc ), it takes my password and then says I have to put in a verification code that was emailed to me. I put in that code, and then instead of logging me in, sends me back to the password page with a message that my password was wrong. However, if I intentionally put in the wrong password, it immediately tells me it was wrong instead of doing the verification code thing. So I feel pretty certain I'm putting in the right password. I had to create a new account just to ask this question; thankfully I had an email address I hadn't associated with a Firefox account yet. Thanks in advance! -Morgan