preamble:
I've been owner of a Fibaro Home Center 2 for about 2 years, and because I love OpenSource software and I'm completely disappointed about Fibaro bad software design and nonexistent support, I switched from HC2 to Z-Way.
I get almost all working, but a major problem remain (only with Fibaro hardware of course

1 RaZberry Primary Controller running Z-Way 1.7.2
3 FIBARO System FGD211 Universal Dimmer 500W v1.4
5 FIBARO System FGS221 Double Relay Switch 2x1.5kW v1.4
1 FIBARO System FGS211 Switch 3kW v1.4
2 FIBARO System FGMS001 Motion Sensor v 2.4
2 FIBARO System FGMS001 Motion Sensor v 2.6
1 FIBARO System FGSS101 Smoke Sensor
1 Philio Technology Corporation Slim Multi-Sensor PSM02
1 Everspring AN158 Plug-in Meter Appliance Module
1 Horstmann HRT4-ZW Thermostat Transmitter
1 Horstmann ASR-ZW Thermostat Receiver
9 Everspring SM103 Door/Window Sensor
1 Everspring SP814 Motion Detector
2 FIBARO System FGWPE Wall Plug
1 Aeon Labs Minimote Secondary Controller
1 Duwi Secondary Controller
problem:
about once per day, in completly random order, one or more of the Fibaro switches (the problem happen with all FGD211, FGS221 and FGS211) get completly stuck, for stuck I mean that I must power off the general elettrical power line of the house to make it working again (the switch stop responding to zwave commands and from hardware wall switch too)
considerations:
My Fibaro switches and motion sensors are 2 years old (I think the first series sold by Fibaro), and I do not have new switch release to test. I suppose that these problems depend from not well supported functions or some strange bugs of the earlier Fibaro switch release. However I never had these problems when used HC2. So I think they depend on some interaction with Z-Way.
Anyone here with the same problems?
How can I actively help Z-Way team to debug these two problems?
Many thanks in advance.