This is a new one for me. Total novice here.
Have Apple TV w/HDHR and Synology 220+ with Xfinity TVE.
Local OTAs are all working. Pluto is working. Very very few TVE channels such as Food Network are working. It seems like 10% of the channels will actually load up. The guide shows everything.
All Xfinity channels are working on the Xfinity Stream app.
Have rebooted the NAS, Apple TV, and opened up the Channels app on Synology. Rescanned channels and all of the channels I'm not able to watch have a checkmark like they're working.