I'm having another problem with one of our TiVo boxes. When browsing the YouTube app i can stream to a couple of things (PS4, TV, Roku etc). I noticed this morning that only one of the TiVo boxes we have shows up.
I've looked through all of the settings on both boxes and cannot find anything different, i've signed into the same account on both boxes and checked my YouTube setting and really struggling.
This has helped a little - it now shows up on the app when my second box is using YouTube however the main box is there always, so if i wanted to i could send the video to the TiVo even when its on standby