I deleted my cookies today and got logged out of the website.

Now I can't log in because it says 2FA is wrong (I leave the field blank in the login screen, as it says). I don't think I set up 2FA, freebitcoin is not in my Google Authenticator app on my phone.

I have a dark memory that I set up 2FA somewhere where I had to and it didn't work on my phone, so I used a web application.
Can someone help me?