In HA forum there is an interesting topic
The initial release of this stick runs Z-Wave library 3.95, SDK version V6.51.02 and firmware version V1.00 - Some of these units can be updated to the newer V1.01 firmware but not all of them. These sticks don’t work on a Pi4
So indeed, maybe some of them can’t be upgraded and give problems?
To bad there is no change log what actually is fixed/improved with higher SDK