Okay that's the European version of the CM15
Most here use the North American version which use different frequencies for RF and operate on 110 volt.
The SDK software should work fine for both cm15 versions as programs I and others created work fine for users of the CM15E.
There isn't a setting for transceives in the SDK.
The SDK sees all HC and transceives all unless you code something to ignore some House codes.
I've notice some actions aren't reported with the SDK samples, I assume it is just a mater of coding.
The fact that the device doesn't turn on or off from one machine but does from another indicates (to me) you have a noise issue from the problem PC.