I have several groups right now that will not allow me to add members unless they have a creator user type. I want to add viewers and field workers to these groups. The field workers must be a part of the group to input content using Survey123, but the members are always rejected when I try to add them as field workers. I only have two role options, viewer and data editor, so I'm not sure if that is something contributing to this problem.
Originally, I tried to switch them from creator to field worker user types, but I got an error message saying that the member user roles could not be changed due to belonging to a group with "update capabilities."
I would like to rather not have to open this group to the entire organization if possible, but I have tried it both ways and they have both failed. This is the error message I get when I try to add them as field workers:

My settings are as follows:

What am I doing wrong?