Ok, still randomly revert to CONFIGURATION_PENDING but does work when I toggle them from openhab (but stop updating when using the switch). PMing you the log
Hm, at first sight, I found only one socket device in the logs which looses UPnP subscription.
This is not really an openHAB issue, but more a device issue. Does this device (9e) have a stable WiFi connection?
Binding seems to behave absolutely correct according to your logs.
Hello,
The socket is not connected at all, it’s lightswitch that are used (the socket is used in the summer only).
Wifi is stable, they are all on the same SSID and I only have one wifi access point. I’ve setup a constant ping on one of the switch and in the past 3 days, haven’t lost a ping. But OpenHAB does lost it’s track unless I toggle it GUI. I’ve checked my influxdb and setup a graph where it show on/off and I can see that everyday, I sooner or later lost update from the switch in openhab resulting in wrong value (always OFF though).
I honestly don’t know what to answer 
Would you please PM me the UDN of the failing device, so I can check your logs deeper…