With only a couple Z-wave devices, reliability of communication can be an issue, even if the lock is fairly close to the panel. It is also dependent on materials in the environment, if the lock is on a metal door, etc.
I see in your recent diagnostics that there are 34 successful Z-wave messages logged, and 20 failed ones. That’s across all devices and the diagnostics do not single out devices, so we cannot specifically say how much of that is the lock, but that is a high percentage of failures, so you might just be running into communication issues.
Try a reboot of the panel first. Is the lock new or was it used previously? If it has been used for a while, replacing the batteries is a good idea.
Thanks, are you able to tell if my ADC-T3000 is working properly as a z wave repeater. It is about 10 feet from the lock with nothing blocking it, so that may help to understand if it is a z wave signal strength issue.