Update: Now the SNY app works on my primary TV and not on my secondary TV. When I saw it was working on my primary TV, I thought the app was fixed for good, but no! I tried the usual (removing, reinstalling and restarting) and it doesn't work on my secondary TV.
Roku support, again, pretty please, work this out w/ SNY (see my previous post, sending us to the SNY homepage is not acceptable). Please and thank you!!!!!