This is my solution. Just install the https://github.com/daydy16/MMM-Tado
In the config file:

{
		module: 'MMM-Tado',
		position: 'bottom_left', // This can be any of the regions.
		config: {
		updateInterval: 900000 // miliseconds-15minutes-96times per day < 100 
			}
		},

After you launch your Mirror with “node --run start”, you receive in the terminal this:

MMM-Tado: Device authentication required. Please visit the following URL: 
https://login.tado.com/oauth2/device?user_code=XXXXXX

You put that URL in your browser and submit the code. That’s it.
Hope it helps!