One of the sad things which I discovered about using most any e-device is.............it seems not to be really belong to you.
If it is linked to something else, it could be remotely changed at the real owner's updates or changes whim. So I decided to add the features that cannot be changed by the same owners whenever the whim hits them.
So here is one add on device I use for my own Rokus. The Philips Basic Timer. One version only has one plug in. The one pictured here has 2. Just set your selected time period plug in the unit and you good to go!
No more need to worry about what Roku decides to do when you DO IT YOURSELF!