I am unable to add the Apple TV app to my older LG Roku TV (smart TV with Roku built in). When I try to add the app I get an error message saying my LG Roku TV is an older device which is not compatible. Can I purchase a Roku box that connects via HDMI and use it on the LG Roku TV? Will this allow me to access Apple TV?
Yes - I recommend the Express 4K+ as the cheapest most capable and forward-looking model.