I am not sure I understand your reply. When setting up the remote there are two steps; pairing, setting TV controls. When attempting to setup the voice remote pro to my Roku Ultra 4660 the pairing goes fine, but when I go to setting TV controls it does not.
The TV control setup first plays music and asks you to confirm you hear it. That works fine. I click yes. Next it asks, "Has the music stopped playing" which in my case the music could still be heard. , I click no. It then repeats the process with TV code after TV code with the same results. I continue to hear the music for all codes. Which I guess it means the mute function does not work.
Update- I tried something different and it worked. I noted for all other remotes the very first TV code it tried worked. I tried setting up the Voice Remote Pro one more time. This time when it asked, "Has the music stopped playing?" although I could still hear the music I answered NO anyway so it would accept that TV code. It works. Power, volume up/down, and mute. Go figure.