When you change a setting for a tado° product using Google Home (e.g. with the Google Assistant), your tado° switches to Manual Control. This happens because the tado° app records the change as a manual change on the device.
Note that Google Home works via a cloud-to-cloud connection. So you always need a working internet connection to communicate with your tado° devices over Google Home.
For more information about tado° and Google Home, refer to our Google Home Section.