So, I could use my MiBox S pretty normal when it was on Android 8.X. After upgrading, I was not able to access the settings of my TV on the Google Home App. I deleted the device from the app in order to add it again, but now my GH app can't found the device.
Anyone struggling just like me?
Clear data on your Google app on MiBox S. Restart your MiBox. Trigger assistant search on mi box and ask a personal search like what's in my calendar? Then an Assistant notification on your phone will surface saying if you want personal results must enable this setting for your device Click that and set up your device.
You must go to Assistant settings in your phone and find your device.
Another solution to erase Google Account from Mi box, restart and sign in your account.