Jasco 45712 has short range

Hi Team
I have ten GE/Jasco 45712 Z-wave dimmer switches working. One fried, and when I replaced it, the new one only works with the HE box within 5 ft. 15 ft, it does not work. Verified with logs.

In the same junction box, there's another 45712 which works fine.
I've excluded/included/repaired z-wave net several times.