I have two Roku TV’s (TCL and Insignia), one Roku stick (3600) and three Roku3’s. The new Plex Live TV works great on all my Roku devices with the exception of the two Roku TV’s - both of which have great wireless signals and operate all other apps well. Any idea why Roku TV does not appear to be supported as indicated? They both get to “99%” when loading channels but then don’t work.