Stella Z does not report temperature

I have included a few StellaZ valves, but they do not report temperature back. All temperatures are 0. I reduced the update time to 1920s and they are there for 2 days. What do I need to do?

My Eurotronic Spirit has a similar problem. Setting the temperature threshold to 0,1 solved it for me (and others):

I’m much more limited with the device settings. Van only change the update time