This custom DTH is working fine.
It sounds like some of your events may not be reaching the hub which may indicate a mesh issue. Try to reboot your hub and do a Z-Wave repair. Worse case you may need to exclude, reset and pair your device again.
You may want to check if your power line is stable, the unit is very sensitive to power fluctuations but that typically leads to an “unknown” door status, where as you’re not seeing an update until you manually refresh it.