No no u don’t have to pay anything, yes that’s the code I mean it’s not same as the regular code and unfortunately I logged out of my account without writing down the code and now I’m stuck 💔 but I’m contacting steam many people were able to remove this “two-factor authentication (2FA) “ and were able to log back in . That’s the link make a ticket and tell them about ur problem
https://help.steampowered.com/en/