I have the Hopper Plus and Samsung smart TV about two years old are my main two devices. Not for Paramount but I also have much older Fire Stick, Roku, and a Google Cast.What devices?
For some reason the Android App on my Sony Z9K has major trouble with that service, the Roku Ultra is just perfect with that app and all others.
I usually can open the APP but once I select a show to play it starts to load but fails to play then freezes up.