Homematic integration

I am setting up a Homematic https://www.homematic-ip.com/en solution for my underfloor heating.

It is a system that runs on a raspberry pi and supports a variety of devices.

I am planning to use their actuators to manage the valves for the warm water that goes to the pipes in the floor. Also direct communicating temp sensors that drive these actuators.
Then I am planning to replace my shelly thermostat valves with homematic thermostats. The shelly devices have been ruled to be "ugly and difficult to set".
In addition their wifi performance is really bad, their thread is not working well and it is difficult to get them solidly connected to the radiators -they sometimes become loose.

Here my question: is there anyone interested in the homematic setup and wants to use a plugin to communicate with the homematic system?

The Homematic system is mostly used in the german speaking countries.

Karl