When trying to add a user to certain groups, I get the following error:
Unable to add the user to the group. They may not have the privileges necessary to join this group, or may already be a member in the maximum number of groups (512).
This user is a Creator (Level 2) and is part of my organization account. It seems like it's only certain groups. I'm the group owner, and the settings between a group I can add the user to, and a group I can't add them to, seem the same.