Okay, still trying to reacquaint myself with setting all this up, so forgive me.
I just noticed that WMC is missing a bunch of channels (18 HD channels that I am looking for). These are not showing up, at all, in WMC.
They are in HDHomerun’s setup program, and I can play them in VLC (or HDHomerun View).
I have run the setup in WMC a couple of times without luck.
I missed them during my initial setup, because I assumed all of the available channels would show up. I started looking for FXM in Kodi and could not find it…which lead me all the way back through to WMC.