Combee 2 Zigbee bad or no connection

Hello there,

I’m new in the Home Assistant world. I’m running Home Assistant on Windows. I have it for a few weeks now and everything works fine.
Today I bought a Conbee 2 stick with 3 Inner light bulbs and a Aqara P1 motion sensor. Setting it up was pretty easy and automations with it worked fine, but I now I noticed that everything went slow. From the motion detection to dimming or turning on the lights…

I opened deCONZ and I noticed no green lines or no lines at all. The Conbee stick is upstairs and the motion detector down stairs, that seems to have a good connection but the Inner blubs not and for some reason one is not connected anymore!

Is there someone who can help me?