It won't let me change the admissions? It's constantly on 'no joining' or whatever it's called! D : I want to switch it to 'public', but every time I try, it just goes back to the 'no joining' one. Advice? :(

there is nothing that can be done about it. They have been stuck like that for more than a year and doesn't seem to be any end in sight. Someday they will be fixed.

Well, can I still invite people? Or is there no more hope for bringing in people to my cult?

People should be able to click the link on your profile to join.