On my older TV setup I had to run two RG cables into the trailer from my two port SAT DISH to two SAT RCVRS one in the living room and the second one in the bedroom. Have no idea how the newer trailers are setup to do this...
Then I ran VIDEO CABLES from the SAT RCVRs to the VIDEO INPUT on the TV sets.
This was how I got mine to work and also each TV can watch different channels.
The problem you may be having is the SAT DISH control voltage has to get from the SAT RCVR to the dish. Those connections you are using must be prohibiting that from happening.
Roy Ken