I had no pb on Nitrado server, just put your "Main" server on the home grid and it's ok.
There is a small file that i did'nt use the "ServerGrid.ServerOnly.json", but i did just use the servergrid.json and the pictures.
I don't know where to put the other one.
I still don't see the pve quest but i didn't move from the freeport for the moment.