Players can't join my non dedicated

With my recent mod, I cannot have other players join my session. It is the only mod installed and other players simply time out when trying to connect, despite being subscribed to the mod. This was recent, but I can’t seem to find anything that would indicate this kind of issue.

Also, this mod has to be ahead of some other mods (not all of them) in order for the engrams to work. What could I be overlooking?

Works great in the dev kit, only recently got this issue. Structure is in base_primalgamedata_child under additional structures to place, engrams are under additional engrams, testgamemode_child is referenced, and that’s it.