Zigbee2Mqtt device unavailable after HA restart

Configuration Zigbee
21

I had this problem and my solution is to re-force publish the MQTT birth message after which Z2M re-populate device statuses -

Adjust the delay as necessary depending on the time it takes your system to properly load :slight_smile:

EDIT - just re-read your comments and you tried this :frowning:

automation:
# Force Publish HA Birth Message
  - id: zigbee_publish_birth_message
    alias: Zigbee Publish MQTT Birth Message
    trigger:
      platform: homeassistant
      event: start
    action:
      - delay: '10'
      - service: mqtt.publish
        data:
          topic: 'hass/status'
          payload: 'online'
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