Update - I changed skin. Kodi crashed and then everything worked when I reopened it.
I followed the instructions and installed the repository then the PVR client. It wouldn't find the server so I entered the IP manually and still no channels showing up.
I noticed I can see the add-on through settings but not the add-on tab in the main menu. Does that mean I did something wrong?
Am I supposed to install the Channels Add-on that's through Kodi add-on browser as well?