I have a Roku Ultra (4802X) and the "Media Player" used to play mkv files from my Synology NAS just fine but now it says "No compatible videos found". I also installed the Plex player and it does work but none of the remote control functions work on that app so all I can do is play or go to the home screen. No pause, rewind, etc. I have made sure all devices are updated and have rebooted them. I have also uninstalled the media player app on the Roku and re-installed it with the same result. Any ideas. I am using software version 14.0.
Thank you.
