How to set a new 2FA secret after launch

After launch, you will need to craete a new 2FA secret in your authenticator app, for use on the production domain. To do so, go to https://www.yourdomain.com/wp-admin/profile.php

Next, click two-factor authentication.

Then Configure:

Then Continue

Finally, click the little chevron next to Mobile app

Then select your device type, and click Generate new secret:

That will give you a new secret for production use.