Killed my whole Zigbee network -> same problems again after new config

Hi there,

I had in the past some troubles with my Zigbee network.
Situation was that I added the devices all at the same spot…
So the problem was that some devices had a really bad connection to the network and the devices dont change their status reliable…

Now I removed all (32) devices and them in the correct sequence (first plugs / 230 V and then battery devices).

But the problem still exists.

I also checked the channels from WiFi & Zigbee (channel 20) and this should be fine.

One problem device is the “Skylounge links” (same distance as “Skylounge rechts”)
It is ca. 1 m away from the “Skylounge Repeater”


can someone explain the bad connection?
The room is empty, only a TV and Xbox are standing on the ground…

Has anybody an idea what I can also try?