I am part way thro setting up room thermostat but need to go back as have determined i need the extension kit rather than the current set up i have. How can i reverse what i have done so far? or factory reset?
For adding new devices there is no factory reset as this is a configuration change to your tado° setup, a reset of your configuration would mean everything goes, not just the new addition.
In such cases we recommend you contact our support team directly either through our Live Chat https://www.tado.com or through our contact form