connectivity / Tx Errors - AN158 Wall Plugs

[elfrigo]

I have several AN158 EVERSPRING Wall Plugs in use combined with Homey. The problem is that after a while they start losing the connection with Homey. Tx Error's increase a lot and the route becomes "Unknown". My house is covered with various z-wave devices so the mesh network should not be a problem.
The only thing that works is unplugging the AN158 from the wall, wait a few and plug it in again. This solves it for a few hours-days until the problems start again.

Any idea how to solve this?
Or how I can help solving this?