If you have old device on IOS 9 - Harmony Hub disappears from Home App in TV Platform mode 
When I press on the Harmony Hub in the Home App or Control Center and try to change something, it disappears. Homebridge is still running fine. The Hub only reappears when I restart Homebridge. Closing and reopening the Home App does nothing. Also when I am in the Settings of the Hub in the Home App, I can see all my Activities and select which ones I want to show. But when I press on the Inputs button (bottom left) there are no Activities/Inputs. Mostly the Hub then disappears immediately afterwards. The Homebridge log file also says nothing new.

I am new to this, so if you need any more info I am glad if I can help. Thanks for your efforts btw. :)

This is my config:
"platforms": [
  {
    "platform": "HarmonyHubWebSocket",
    "name": "Harmony Hub",
    "hubIP": "192.168.XX.XX",
    "TVPlatformMode" : true,
    "mainActivity" : "Apple TV"
  }
]