Live TV : Playback Error ; Could not tune channel (but it's working on hdhomerun app)

You have the wrong syntax in the Allowed Network field.

Jan 02, 2022 08:31:34.486 [0x3105ae000] ERROR - Error parsing allowedNetworks '192.168.*.*': Invalid argument

Plex Server and HDHomerun needs to be on the same segment. IOS clients aren’t working at the moment need to wait for an update or find the one post that has workarounds.

Edit : Live Tv & DVR guide data missing on AppleTv and iOS - #71 by Uzmi