Mods working on SP but not on Server

Hey. So I an not sure if it's a game bug, or a server bug, but I have been looking for solutions. 

I am playing ASA on Xbox on the unofficial Crossplay server. The server uses some mods. Mostly cosmetic. 

While most people playing on PCs have no problem, the Xbox users can't place structures from Dwarven builders mod and from Dino +. I can craft the structures, and as I am placing them down - the just go back into my Inventory

First I thought that it might be some mod collision causing it on Xbox. But then I replicated the same thing on Single player, and I can place everything. 

What could be the cause of this? Could it be some API problems? Some server issues? Or just Ark being Ark?