Zigbee2mqtt won´t pair new devices

Hi guys,
I need a bit help - my zigbee2mqtt is runing flawless with SLZB-06U zstack adapter, but I need to pair new devices and here starts the problem - when I click Permit Join, I see message “z2m:Zigbee: allowing new devices to join” but thats all, no new device is seen, I´ve tried Sonoff click buttons, Hue bulbs and LED strips - nothing.
I´ve tried every hack and method on internet but no help either. I am runing 53 devices without any issues but I need to add new hue lightning inside and outside of my house.

Can someone help me please? Thx a lot…

Set Z2M logs to debug, do a fresh pairing attempt, then post them here. We can’t help much without those.