I have followed exactly the instructions but I am unable to sign up via BuddyPress. I don't want free registrations so level-0 is disabled. However, it does not allow new registrations. The moment you submit you get to see a message that registrations is not allowed. In my general wordpress settings the "Anyone can register" is disabled while I know I have enabled it. Log files are empty and no plugins are in conflicts.
Next question. It's for me unclear to which page I have to point to for new registration. Is it the Buddypress registration or the Option page where they can pick their level?
ps: I want to start with the free version first to try it out. I'm currently on Patreon but I don't want to be part of them anymore.