https://www.myuv.com/en/be/where-to-watch tells only the beginning of the story so I take it your model does not have the app for the service in question. This is why the myuv site notes use by "Watch your movies and TV shows on your TV with apps on game consoles, streaming boxes and sticks, smart TVs, and connected Blu-ray players."

If the TV doesn't have it then add it with the game console and other devices.