Z2M - Zigbee Channel change

Hi guys,

Need your advice, I have been running a decent Z2M network on a Conbee II stick for past few months with no issues.
Recently I have been testing my new WiFi/LAN Ubiquiti setup which i am going to migrate next week hopefully from my current Router.

I just realised my Z2M network on home assistant stopped working yesterday.
It took me a while when i realised that in the Ubiquiti APs setup i have 3 APs and i have set them up to use 1,6,11 channels.

So this caused interference and my Z2M network to stop working when i check in Supervisor the config file shows its on Ch 11. So i did some research to see what is the suitable channel to use to avoid any interference.

I went ahead and modify the config file to set my Z2M network to Channel 20.
I do have a Hue Bridge on Channel 25. It has no issues all this while.

This is my config below :

data_path: /config/zigbee2mqtt
external_converters: []
devices: devices.yaml
groups: groups.yaml
homeassistant: true
permit_join: false
mqtt:
  base_topic: zigbee2mqtt
  server: mqtt://core-mosquitto:1883
  username: mqtt-user
  password: mqtt-user
serial:
  port: /dev/ttyACM0
  adapter: deconz
advanced:
  log_level: warn
  pan_id: 6754
  channel: 20
  network_key:
    - 1
    - 3
    - 5
    - 7
    - 9
    - 11
    - 13
    - 15
    - 0
    - 2
    - 4
    - 6
    - 8
    - 10
    - 12
    - 13
  availability_blocklist: []
  availability_passlist: []
device_options: {}
blocklist: []
passlist: []
queue: {}
frontend:
  port: 8099
experimental: {}
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

So as since the Z2M channel has changed I have to start pairing my devices again.
I tried pairing my my Ikea Repeaters and started off with a Aqara Door Sensor, i kept receiving these errors.

I also see the LQI quality to be very low around 17-18. My repeaters previously able to average 200+ LQI. not sure why, this happens to the Zigbee devices i started to pair.

Can i know how can i resolve my issue?

Zigbee2MQTT:error 2022-01-22 21:39:47: Failed to configure '0x680ae2fffe8287a6', attempt 1 (Error: Bind 0x680ae2fffe8287a6/1 genLevelCtrl from '0x00212effff0772e5/1' failed (waiting for response TIMEOUT)
    at DeconzAdapter.<anonymous> (/app/node_modules/zigbee-herdsman/dist/adapter/deconz/adapter/deconzAdapter.js:710:23)
    at Generator.throw (<anonymous>)
    at rejected (/app/node_modules/zigbee-herdsman/dist/adapter/deconz/adapter/deconzAdapter.js:25:65))
Zigbee2MQTT:error 2022-01-22 21:51:14: Failed to execute LQI for 'Ikea Repeater Kitchen'
Zigbee2MQTT:error 2022-01-22 21:52:16: Failed to execute LQI for 'Ikea Repeater Bedroom'
Zigbee2MQTT:error 2022-01-22 21:53:18: Failed to execute LQI for 'Ikea_Repeater'```

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