Zigbee devices that do not use standard configuration and parameters (standard ZCL clusters and attributes) will need a custom handler/converter/translator as Python script code in “ZHA Device Handlers” repository to extend custom support for specific non-standard devices (which the ZHA integration then makes use of).
If you can not code that Python script code yourself to write the needed custom handler/converter/translator for adding that specific device to the “ZHA Device Handlers” repository/library then suggest submitting a “device support request” as new issues → https://github.com/zigpy/zha-device-handlers/issues
Without a “device support request” as a new issue posted to the “ZHA Device Handlers” repository/library requesting support for an unsupported device or device feature with Device signature and Diagnostic information the ZHA integration developers will not even know about the device unless they by random chance happened to have bought it themselves.
I doubt that anyone bothered with reporting it as then it would probably already be fixed seeing as it has gone 1.5 years now, but do search → Issues · zigpy/zha-device-handlers · GitHub