In the meantime, try using the official Roku Remote App in the Play/Apple Stores that you can download to a mobile device (phone/tablet). Some users end up using it in replacement of the physical remote and better for Private Listening if you like that feature as well.
Roku Community Streaming Expert Just another Roku user... I am not a Roku employee. Insignia RokuTV, Ultra 4660x, Premiere+ 3921, Express 4k+ 3941