Try pairing your remote again. From @Tivoburkee :
You can also unplug the roku from its power for a bit, have the remote ready with battery door off and one battery in, now power the roku when the roku name stops bouncing put in the second battery and press and hold the pairing key for 3 to 5 seconds and release. Just let it communicate with roku it is all right if the light goes oyt in the battery compartment don't press anything until you get a big DONE onscreen.
Roku Community Streaming Expert
Help others find this answer and click "Accept as Solution."
If you appreciate my answer, maybe give me a Kudo.
I am not a Roku employee.