Thanks TivoB! I just read about the 4K+ uses smartphone to listen to TV, so I don't have to upgrade to the Ultra to have the aux jack in the remote. I might be able to re-pair the one I have now to work with 4K+ also. So, I pre-ordered the Express 4K+. I can't wait! we will finally be down to one remote and an occasional roku remote or phone to listen using headphones.
I'm having the exact problem using my Express 4K+ remote with both my 2020 Samsung TV and my brother's 2021 LG TV. Software for the Roku Remote and both TV is up to date. Remote's voice control and channel control work, but turning on/off and volume control don't work. If somebody could tell me the name and model of a couple or more ALL the TVs Express 4K+ features will work with, I'd be very appreciative. Geesh, wouldn't you think Roku would mention the fact that all the remote's features may not work with some TVs....and then give us a list of TVs that will be able to use ALL the remote's features? Sure would save us customers and Roku's customer service reps a lot of time and trouble, not to mention aggravation. This is no way to win friends and influence people.