Hi OP.
I’m confused. How did you get locked out of your account? Do you not remember your master password? Also, it’s my understanding that if you have the desktop app, you can set a pin for it.
Although I have all my 2FA tokens saved in my password manager, I still have a backup in a stand alone 2FA app. I use Ente Auth, they have a mobile and desktop app. They are also free and open sourced.
I hope you find a solution.