This is the section which makes that button visible:
https://github.com/xbmc/skin.confluence/...1015-L1021
To be exact, it's:
<visible>PVR.HasTVChannels</visible>
That's a boolean. So it's either "true" or "false" in the end.
"False" can be caused by:
- Either the TVH server or the client on your Kodi instance is not running
- Kodi can't connect to the server
- The server does not have any channels scanned
- A firewall on the OS which runs the TVH server is blocking Kodi
and some more
I would recommend to simply provide the
Debug Log. If everything works fine, it should at least show the channels which the client is able to read from the server. If the log does not show anything in that regard, then please check the server, the network, firewall settings and so on.