I also had this issue. I was trying to connect a coax splitter to a multi user cloud using a coax cable. In the other widow with the network the multi user cloud was connecting to, which was called peer20, peer20 was connected to that network with a Ethernet cable. When i tried connecting my multi user cloud to another network where that multi user cloud was connected to its network with coax it worked. The point being I believe you have to use the same cable on both sides of the multi user cloud on your network and the one you are connecting to.