Guacamole totp

Hi

I have a self-hosted guacamole server running in docker. I set the "EXTENSIONS" "auth-totp" env variable. Now I want to switch to another authenticator app, but if I remove the variable and after a login and logout put it back, it doesn't recognize that it's the 'first time' so it just askes fot the code and doesn't show the qr. Is there anything I can do to fix this?