Help requested to bind zigbee button to bulb

Configuration
1

I use the EcoDim 8 button wall switch EcoDim ED-10014 control via MQTT | Zigbee2MQTT
together with 3 Philips Hue bulbs. called ‘muurknop_living’
It was a challenge to use 2 buttons to control the bulbs (on/off and brightness control)
Finally I use below automation and it works fine for me.

alias: Muurknop living - verlichting zithoek
description: ""
trigger:
  - platform: device
    domain: mqtt
    device_id: 44e31cca3a822205ef68c7fb7c305b6f
    type: action
    subtype: off_1
    discovery_id: 0x847127fffe4083eb action_off_1
    id: light_off
  - platform: device
    domain: mqtt
    device_id: 44e31cca3a822205ef68c7fb7c305b6f
    type: action
    subtype: on_1
    discovery_id: 0x847127fffe4083eb action_on_1
    id: light_on
  - platform: device
    domain: mqtt
    device_id: 44e31cca3a822205ef68c7fb7c305b6f
    type: action
    subtype: brightness_move_down_1
    discovery_id: 0x847127fffe4083eb action_brightness_move_down_1
    id: dim-down
  - platform: device
    domain: mqtt
    device_id: 44e31cca3a822205ef68c7fb7c305b6f
    type: action
    subtype: brightness_move_up_1
    discovery_id: 0x847127fffe4083eb action_brightness_move_up_1
    id: dim-up
  - platform: device
    domain: mqtt
    device_id: 44e31cca3a822205ef68c7fb7c305b6f
    type: action
    subtype: brightness_stop_1
    discovery_id: 0x847127fffe4083eb action_brightness_stop_1
    id: dim-stop
condition: []
action:
  - choose:
      - conditions:
          - condition: trigger
            id: light_off
        sequence:
          - type: turn_off
            device_id: 17a378251759a1aa938f5877cf979fc4
            entity_id: light.zithoek_midden
            domain: light
          - type: turn_off
            device_id: 7c12bf1d389dd687a800fa8b59604534
            entity_id: light.zithoek_raam
            domain: light
          - type: turn_off
            device_id: 07349ba043372ce59927a0af219f8bb0
            entity_id: light.zithoek_tafel
            domain: light
      - conditions:
          - condition: trigger
            id: light_on
        sequence:
          - type: turn_on
            device_id: 17a378251759a1aa938f5877cf979fc4
            entity_id: light.zithoek_midden
            domain: light
          - type: turn_on
            device_id: 7c12bf1d389dd687a800fa8b59604534
            entity_id: light.zithoek_raam
            domain: light
          - type: turn_on
            device_id: 07349ba043372ce59927a0af219f8bb0
            entity_id: light.zithoek_tafel
            domain: light
      - conditions:
          - condition: trigger
            id: dim-up
        sequence:
          - repeat:
              while:
                - condition: trigger
                  id: dim-up
              sequence:
                - device_id: 17a378251759a1aa938f5877cf979fc4
                  domain: light
                  entity_id: light.zithoek_midden
                  type: brightness_increase
                - device_id: 7c12bf1d389dd687a800fa8b59604534
                  domain: light
                  entity_id: light.zithoek_raam
                  type: brightness_increase
                - device_id: 07349ba043372ce59927a0af219f8bb0
                  domain: light
                  entity_id: light.zithoek_tafel
                  type: brightness_increase
                - delay:
                    hours: 0
                    minutes: 0
                    seconds: 0
                    milliseconds: 500
      - conditions:
          - condition: trigger
            id: dim-down
        sequence:
          - repeat:
              while:
                - condition: trigger
                  id: dim-down
              sequence:
                - device_id: 17a378251759a1aa938f5877cf979fc4
                  domain: light
                  entity_id: light.zithoek_midden
                  type: brightness_decrease
                - device_id: 7c12bf1d389dd687a800fa8b59604534
                  domain: light
                  entity_id: light.zithoek_raam
                  type: brightness_decrease
                - device_id: 07349ba043372ce59927a0af219f8bb0
                  domain: light
                  entity_id: light.zithoek_tafel
                  type: brightness_decrease
                - delay:
                    hours: 0
                    minutes: 0
                    seconds: 0
                    milliseconds: 500
    default: []
mode: restart

Next step I’d like to achieve is to bind the 2 buttons to the bulbs.
If HA is offline or whatever it would be nice if it remains working.

This is what I did but Z2M gives me some errors (see below):
I started by making a group for the 3 bulbs named ‘Living_zitplaats_lampen’
Then I selected the wall switch device, tab ‘bind’, and selected ‘Source endpoint’ = 1.
I could choose from 1 till 4. I guess 1 is the upper button row.
In the Destination field I choose my bulb group and I ticked the clusters ‘LevelCtrl’ and ‘OnOff’.

When I click ‘bind’ I get below errors:

2023-06-15 15:48:19Failed to bind cluster 'genOnOff' from 'muurknop_living' to 'Living_zitplaats_lampen' (Error: Bind 0x847127fffe4083eb/1 genOnOff from '1' failed (AREQ - ZDO - bindRsp after 10000ms))
2023-06-15 15:48:29Failed to bind cluster 'genLevelCtrl' from 'muurknop_living' to 'Living_zitplaats_lampen' (Error: Bind 0x847127fffe4083eb/1 genLevelCtrl from '1' failed (AREQ - ZDO - bindRsp after 10000ms))
2023-06-15 15:48:29Failed to bind
2

While clicking bind (and before and after), press the button, so it is not asleep.

3

I just played with the buttons to switch on and change the brightness.
Than I pressed ‘bind’ and in no time it was binded.
Stopped Z2M add-on, tried another zigbee device, off course it didn’t work.
Used the binded buttons to control the lights and everything worked, including the dimming.
Great!