We've bought a house with 2 smart starter kits and 40 radiators - what is to do?

We've bought a house with netatmo thermostats at the radiators. This are 40 radiators. But the Netatmo App only accept 20 radiator. We think that is because there are only 2 bridges that we've found. In this moment we are thinking about to stop with this product because this is no good way to work with it. Otherwhise we need somebody who tells us what to do, to make ist easy and good to handle. We are looking forword to an simple and fast solution. Could sombody help us?