Can you connect in Kodi via the tvheadend client?
Yes I can, but it says looking for tuners, which it wouldn't be able to find as I haven't been able to configure it in my PC browser
Also are you all on the same subnet 192.168.1.xxx
Yes all PC's in the house are.
Also check the settings in Kodi for the server and client
Also try https//192.168.1.106:9982
Done that - same result