This seems to be a common issue, but I can't find a solution...
I just got a Hubitat Elevate today and am setting it up. Got a bunch of devices including Wiz lights added without a problem, but I'm having issues connecting Hubitat with Google Home.
I followed the instructions in the "Google Home installation helper" app. After selecting the hub I'd like to allow access to, the browser goes to a basic page that says "The parameter "state" must be set in the query string." and syncing the two together fails. I have tried rebooting everything, Hubitat is on a static IP address.
Hubitat is running the most current software version, 2.3.3.140, on hardware version Rev C-7.
Any help resolving this will be greatly appreciated! It's very frustrating getting everything set up but not being able to use google to control it.
I eventually noticed that despite changing the IP to Static and changing the network name of the hub, it was still showing up as the randomly assigned IP and default name.
I shut down everything--not reboot, a full shut down of router, computer, phone, hub, modem, switch, etc. Then I unplugged everything. Then I plugged everything back in and started it all up. When I accessed the hub, the name and IP address were showing properly. At this point, I tried linking to Google home again and it was successful.