Nextcloud desktop app asking for app token, not allowing sign in access

Nextcloud desktop app asking for app token, not allowing sign in access
I have been asked to login with my credentials and I do, after that I am asked to allow access to firefox (through the app) so I do and it takes me back to the login screen. I am unable to login or grant access to the app.
There is another option to use “App Token” but I do not know what that is referring to.

Thanks in advance,