Alwas’ problem sounds reminiscent of my problem with the OOMI Multisensors. OOMI Support helped me fix it. We couldn’t figure out where in your DH to insert this line:
//Disable Parameter setting Lock
zwave.configurationV1.configurationSet(parameterNumber: 0xFC, size: 1, scaledConfigurationValue: 0),
so we inserted it into the Vandervoort DH, applied it to the device and now I can use your DH or the stock SmartThings Aeotec Multisensor 6 DH to control the OOMI Multisensor. If you could add that line into your code or suggest to me where to insert it, I could test it with an unconfigured OOMI Multisensor. Once successful, you could boast additional device functionality for your DH.