It worked. I found out that in the new theme environment students no longer see their own classes when I set the group as hidden, but when I set it to private they DO see it. So it was a very easy fix for a strange choice made by the theme.
Thanks for your reply. I will keep this in mind (add it to trello)
I’ve seen this before. And I’ve tried it again just now. I added the bp-custom.php into the plugins folder, but it didn’t do much for me. What am I doing wrong?