@Holland To confirm: I had the latest version of Nefit Easy Server, using latest stable of Domoticz. I had no choice but to uninstall because I simply could not reach my thermostat when this happened. Hope solution will come some day, it was a very very nice feature. FYI: I tried reinstalling easy ...

Worked fine here too for a while, but since about a month the thermostat is not accepting requests (timeout) every few days. It functions by hand, but is inaccessible though Internet (native app) and local network (it's not Internet connection related). I checked but the device does keep saying it ...

I am experiencing same issue as Marcel: Running easy-server on separate RPI2. Nefit Easy thermostat seems to be hanging every 1 to 2 days, also no longer accessible through native app. Have to restart it by removing it from wall, then everything works fine again.