Moes Light Switch Zigbee 3 gang

Hi
I have installed a MOES Zigbee 3 gang Light switch with no neutral wire on my HA with Nortek USB. It has been discovered succesfully and it is working fine as an on/off switch.
The only issue I have is that randomly when the actual switch is in the OFF position on HA dash it is displayed as ON and if I want to turn it on from the dash I touch it one time to turn it OFF (now they are synced) and one more time to actually turn it ON.
The status change is displayed instantly , but after some time it shows it being on. do not know why this is happening.

Another question is: Will be possible to use 1 gang of the light switch that is not physically connected to any lamp as a remote control for another light?

Thanks all