Help setting up new network in home using switch and powerline hardware

Running into a small problem since I have moved into my new home. I had fiber optic and a wireless modem at my old apartment and ran internet upstairs through the Rocket fish powerline. This was a bridge to go into the power outlets and a 4 port switch upstairs from the outlets. Now that I have moved I had to give the wireless router back and switched internet to a cable provider. I purchased a basic 4 port switch today from best buy so that I could run the modem into the switch and have it go into the computer next to it and at the same time into the rocketfish bridge so I can run it to another room of the house. When I do this my xbox and computer in the other room cannot connect. If I remove the switch from best buy it runs through the rocket fish powerline fine and I can connect, however I can't connect the computer by the modem without the additional switch.

Is there a problem with going from a modem to a switch, to a bridge, and back to another switch? Thanks for any help. I am getting a free wireless router in a few weeks but the powerline just works so well I want to continue with it.

Oh, I should add that the powerline bridge is plugged into a powerstrip, this worked at the apartment so I don't see a problem with doing it now.

 

I took the switch back. Maybe a more basic question would help. Is a bridge much different than a router? What is appropriate network structure when working with switches, bridges, routers, and modems? Thanks again!