Another option you have is if you have a computer at home and a good internet connection you can use the Bell Fibe TV app on a computer on your home network or even a fire stick and remote in that should give you access to everything. You may want to test it to ensure it's not choppy. If you still have your old Fibe box though, keep using it for the Sling application. Also, have you tried using the Sling with component connection from the box and not HDMI and downgrading the signal from the box to 720P? That could potentially also work.