Pairing suddenly wont work, existing devices work on zigbee2mqtt

Configuration Zigbee
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1

So basically I want to add more devices. Did updates and stuff, everything that already existed works perfect. Already got like 15 things added in the past. Adding new lights, door sensors is suddenly not possible. Even the LED on the zigbee stick is lid, so I know the stick is waiting for devices. Any ideas?

Configuration:

data_path: /config/zigbee2mqtt
socat:
  enabled: false
  master: pty,raw,echo=0,link=/tmp/ttyZ2M,mode=777
  slave: tcp-listen:8485,keepalive,nodelay,reuseaddr,keepidle=1,keepintvl=1,keepcnt=5
  options: "-d -d"
  log: false
mqtt:
  server: mqtt://core-mosquitto:1883
  user: mqtt
  password: mqtt-password
  base_topic: zigbee2mqtt
serial:
  port: /dev/ttyACM0
permit_join: true
frontend: true
2

Wien you add new devices, do you activate the pair mode in the GUI. The permit join in the configuration file is, to må knowledge, not used anymore