The drivers on the Minoston site last time I checked were very old drivers, poorly coded IMO. I would use my ZEN04 driver, it also can be universal for any metering plug, it just wont show settings.
If they are one of the newer 800 series devices, you can also try out [RELEASE] Z-Wave Universal Device Scanner to scan and expose all the settings. You just need to switch to that driver to adjust settings, then switch back to the preferred driver to use the device.
