Zigbee Home Automation integration not finding some bulbs

I’m trying to switch from deconz to the ZigBee Home automation integration using a ConBee 2 dongle, but this gives me yet other problems. First i disabled the Deconz add-on and integration and just installed the ZHA integration which then got all the lights added automatically… This however gave some problems when i wanted to add groups through the integration where lights from other groups would turn on/off with other groups. I therefore instead re-enabled the deconz integration to use the reset gateway feature. After this is uninstalled all the integrations and add-ons for deconz and zha and reinstalled zha… Now no groups or lights were present. A clean slate, fine. I then began adding lights around the house but didn’t make it far. Some of my IKEA Tradfri bulbs just don’t want to add. I reset them by turning them on / off six times, while i have the search running in ZHA. Its like they just don’t communicate with each other. Nothing shows up, and the log doesn’t tell anything.

What are my options?

If possible, try moving them closer to the Zigbee Dongle.