My account has been breached and I’m locked out

You don't mention contacting support. This is the first thing to do, providing precise, relevant details. You will need to be patient at a time when it will be hardest to do so, as the response will probably be slow. Post your ticket number here for the Community staff.

You say "locked out", but don't mention any of the steps you have taken to recover your account, aside from the recovery code, which appears to be giving you a familiar problem.

Do you have a sufficiently recent 1PUX backup? If so, then you can import this into another trusted password manager and use that to change all your passwords while you regain control of your 1Password account.

Good luck and try to not panic. This will take effort and patience, but by the time you've finished, you should be in a better place than when you started.