Newbie with lots of OpenZwave problems (lost config,.. lost nodes...)

Hello everybody,
I’m a newbie to the HA topic. However, what causes me severe problems is OpenZWave.

Problem 1:
I have integrated 34 devices into OpenZwave. After every restart of the Pi4 (with Zwave.Me Stick) all nodes are gone. (Battery operated nodes are completely lost)

Problem 2:
After every restart of the service / the Pi4, all nodes are queried again. It looks like no config is saved. In fact, I can’t find any config files …

Many thanks for your help.