The two pieces of information I used to build the driver for my in-wall dimmers were the fingerprint and the manual.
I used the Simple Device Info Viewer to find the fingerprint (also called the deviceManufacturerCode), which tells the driver which type of devices should use the profile for custom preferences. The DZ6HD is 001D-3201-0001, but what is the DZPD3 fingerprint? Since it worked with the earlier driver, it should also start with 001D- and end with -0001.
The manual from Leviton should have an Advanced Options section, which defines each parameter’s number, length, and valid values. A web search shows a few different sub-models for the DZPD3. Is yours the DZPD3-2BW? That does appear to share most of the same parameters with the in-wall dimmer, though a few are not applicable to the plugs.