Choose a password (at least 10 characters). Next you'll set up two-factor authentication.
Enter the 6-digit code from your authenticator app, or one of your recovery codes.
Scan this QR code with your authenticator app (1Password, Google Authenticator, …), then enter the code it shows.
Can't scan? Enter this key manually:
Each code works once, for when you don't have your authenticator. Store them somewhere safe, e.g. in 1Password. They won't be shown again.