getting that error when trying to sync hubitat with google home. I recently add hub #2. So I removed the integration from Hub #1, now I can't get either to sync with google. Everytime I ask google to Sync my devices, I get this error. Also, all my old google home devices are still stuck in the google home app showing disconnected.
If the devices still show up than the old hub was not removed from the GH app. When you say "I removed hub #1" did you remove it in HE or in GH?
Go into the the home app, then the account button at the bottom. Then go to assistant and then Home Control. Next click on the Plus sign. This will bring up a list of the integrations linked to GH. If I'm right Hubitat will still be at the top. Tap on it and remove it. Then you should be able to start over again with Hub #2.
both. Hubitat listing was gone in Google Assistant app and google app gone on HE. devices still there. A work around was to create a new "home" and then delete the old one with the ghost devices.