I’ve just logged on and initiated a shared hunt with someone I know and was not able to get a “cannot add new member” message to pop-up. I did get several other messages when I entered dummy info though.

To be clear, you’ve entered your partner’s info into the three blank boxes and then hit “add hunter to group” button? It then gives you a pop-up saying that they cannot be added…?

Is it possible they’ve been added to a group already?