No FireTV entities showing in HA 38.2

I have a issue over at the firetv-server repo but also thought I’d post here in case someone knows the answer. I’ve looked at all the posts here but nothing seems to apply.

Running 1.0.5 version of firetv-server on [email protected]. Two FireTV boxes, both have ADB/UDB debugging on, in same network. (pyyaml installed manually so I could use the -c option) Server loads without an error.

firetv-server config file:

devices:
  bedroom:
    host: 192.168.1.166:5555
  livingroom:
    host: 192.168.1.173:5555

Verify devices at 192.168.1.181:5556 works and shows the following:

{
  "devices": {
    "bedroom": {
      "host": "192.168.1.166:5555", 
      "state": "off"
    }, 
    "livingroom": {
      "host": "192.168.1.173:5555", 
      "state": "idle"
    }
  }
}

All states in update as expected in the browser when changed at the device. (State shown above is correct, livingroom device is currently paused and at the screen saver.)

Config in media_players.yaml (included properly as other media_players showing up fine):

- platform: firetv
    entity_namespace: 'ftv'
    host: 192.168.1.181
    port: 5556

No errors at all in the HA logs. Completely clear. Discovery is enabled.

Absolutely nothing is showing up in dev states panel for any FireTV media_players.

I’m pulling my hair out here because I can’t think of anything else that I may have missed. Gone over every post in the forums as well as issues here. No errors in any logs.

Any idea what I may have missed?