Pressing the volume control results in a Not Available message being displayed. The volume does change.
Thanks for the inquiry.
How is you Roku device set up? Is it connected directly to your TV? Are you using Private Listening when you see this message? Can you please let us know what Roku device you are connecting to your TV?
For more information about controlling the volume of your TV with your Roku device remote, visit our Support pages here:How do I set up my Roku® enhanced remote to control my TV?Why is my Roku® enhanced remote not controlling volume and power on my TV?
Please keep us posted and we will continue to you assist you from there.