I can confirm that the CRTC has nothing to do with Bell or Shaw and their changes as I asked the CRTC and got a response that they didn't influence Bell or Shaw, it's actually the US networks unhappy about re-broadcasting their programs (without US advertising) into the US.
I also suspect an LNB incompatibility, a couple of years ago I had the old (2 satellite) LNB on the RV and the new LNB at home (which required the receiver to be re-programmed). When I moved the receiver to the RV it wouldn't work, and that was in Canada! Mix and match problem.