Missing Moderator?
I'm not a member of this group. Apparently, if you are friends with someone in the group, you're able to respond, even though you're not a member of that group.
This is a common issue with groups on this site. Group Moderators come and go ... mostly GO, and never find anyone else to take over the group before they leave. If the group is Private, that means anyone requesting to join, can not join without that Moderator accepting them. Uploaded photos remain un-uploaded.
I've taken over many groups that have seen group Mods leave and not return within months, sometimes ... years! I'm not sure the reason but it seems that the site owners would rather you start a new group than to give you the established group and make you a Mod of that group. I usually change ALL the groups I've taken over to Private. I want to screen those that join the groups I Moderate. We all know that there are lots and lots of fakes on this site and I want my groups to reflect the intent of this site .... True Nudists.
If you feel so compelled, request that you are made Moderator of this group through TT2. Good luck! ;-)