Some of you may already know that the Roku remote can be a bit tempermental. You may wish to consider setting your Roku remote aside and start using the Roku Remote Control App in its place.
You can get the Roku Remote Control App from here or just go to the App Store on your phone and search for "Roku Remote Control". They have both an Android version and an iPhone version.
IMHO, the Roku Remote Control App is a whole lot better than the Roku remote control. I use the Roku Remote Control App about 98% of the time - it really is that much more convenient and reliable.
Go ahead and check it out. Oh, yeah, it's free so the price isn't so bad either!