Meross MSS620 - device accessible but not responding to commands

Hi,
using help on this community site I’ve successfully established a openhab-mosquitto-“Meross MSS620” (powerstrip) configuration

openHAB 4.3.5 , mosquitto version 2.0.11 running on Raspberry Pi4

  • SSL Connection from Meross to mosquitto-server is up
  • Meross is permanently sending SET messages for namespace Appliance.Control.Bind, device-LED Shows half-green/half-red
  • Openhab configured to send SETACK message as response
  • Meross stops sending SET-Messages and switches it’s device-LED from red/green to green/green
  • switching the device manually on or off sends PUSH Messages to topic publish with the correct states
  • but Meross is not responding to any message sent to the topic subscribe

It does not report any system state (e.g. Appliance.System.All) nor does it execute togglex-commands to its channels.
No error messages in /var/log/openhab.log and /var/log/mosquitto/mosquitto.log

Any idea what might be wrong? Do I have to send additional commands to the device before or after SETACK on bind?

BR
Hans-Peter

Seems to be ok now. Problems probably due to interfering homeassitant addon meros_lan, which modified the signing key.