How to get a 6-digit verification code from Two-Factor Authentication (2FA) when Secret Key (32 characters, ex: SCCNPSWGSJCHXXRX42RJSW47APKUTABD) is available.
Step 1: Click on the button with pen shape
Step 2: Click on the Add button
Step 3: Enter a name to remember in the Account name box
Step 4: Enter the 2-FA code (32 characters) included in the .txt file that you received when you purchased your account
Step 5: Click the Add button.
Then you will have 6 random digits - every 30 seconds. Your job is to copy and paste those 6 digits into the box when FB asks you to enter the 2-FA code at login. Done