I've had a working Tado system for years at home with a Smart Thermostat directly wired to the boiler, and 10 TRVs signalling it when they need heat.
I've just bought a Starter Kit with a Wireless Thermostat and a Wireless Receiver, and I'm able to add it to the system, intending for it to control a new underfloor heating setup.
I expected to be able to set each room to a different zone controller, i.e. so the kitchen with the underfloor heating would be set to this new zone, and everything else to the old. But as soon as I add the Wireless Receiver to the system, the old Smart Thermostat disappears from the list of zone controllers. There's a dialogue box that lets me choose, but there's only the Wireless Thermostat listed.
To restore my heating I have to remove both the Wireless Thermostat and the old Smart Thermostat, and re-add the latter.
How is it meant to work, and have I bought the wrong product here?
Any advice appreciated.