@SylviaSkylar , For me, there is a button that says menu. It pulls up the table of contents. There is two buttons, bookmark and join as. Click join as... and it will send a request to the creator.
@SylviaSkylar , I honestly don’t know, hopefully soon tho. Do you see the “Join as…” button? Click that and choose co-writer to join the club. She’ll accept it once she returns