Config SLZB-MR4U avec Zigbee2MQTT sur Home Assistant, impossible d'appairer et connexion MQTT refusée

Bonjour à tous. 

Je débute sur HA et j'avoue, c'est un peu galère et pourtant, je bosse dans l'informatique ce qui devrait me faciliter la tâche, mais non :)

J'ai une instance HA sur un RPI4 + carte SD pour test.

Maintenant mon problème, c'est la configuration du dongle SMLight, je suis des tutos HACS->Mosquito broker->Zigbee2MQTT, ça n'a pas l'air de fonctionner.

Ma conf sur Z2M :

ata_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:
  base_topic: zigbee2mqtt
  server: mqtt://core-mosquitto
  user: mqtt
  password: mqtt
serial:
  port: tcp://slzb-mr4u.local:7638
  adapter: zstack
  baudrate: 115200

Ma conf sur SLZB OS : 

 Emplacement de SLZB-MR4U
  port: tcp://slzb-mr4u.local:7638
  baudrate: 115200
  adapter: zstack
# Désactiver la led verte ?
  disable_led: false
# Réglez la puissance de sortie sur 20 maximum
advanced:
  transmit_power: 20

Logs Z2M :

[2026-02-10 15:30:43] info: 	z2m: Logging to console, file (filename: log.log)
[2026-02-10 15:30:43] info: 	z2m: Starting Zigbee2MQTT version 2.8.0 (commit #unknown)
[2026-02-10 15:30:43] info: 	z2m: Starting zigbee-herdsman (9.0.2)
[2026-02-10 15:30:44] info: 	zh:ember: Using default stack config.
[2026-02-10 15:30:44] info: 	zh:ember: ======== Ember Adapter Starting ========
[2026-02-10 15:30:44] info: 	zh:ember:ezsp: ======== EZSP starting ========
[2026-02-10 15:30:44] info: 	zh:ember:uart:ash: ======== ASH Adapter reset ========
[2026-02-10 15:30:44] info: 	zh:ember:uart:ash: Socket ready
[2026-02-10 15:30:44] info: 	zh:ember:uart:ash: ======== ASH starting ========
[2026-02-10 15:30:46] info: 	zh:ember:uart:ash: ======== ASH connected ========
[2026-02-10 15:30:46] info: 	zh:ember:uart:ash: ======== ASH started ========
[2026-02-10 15:30:46] info: 	zh:ember:ezsp: ======== EZSP started ========
[2026-02-10 15:30:46] info: 	zh:ember: Adapter EZSP protocol version (14) lower than Host. Switched.
[2026-02-10 15:30:46] info: 	zh:ember: Adapter version info: {"ezsp":14,"revision":"8.0.2 [GA]","build":397,"major":8,"minor":0,"patch":2,"special":0,"type":170}
[2026-02-10 15:30:46] info: 	zh:ember: [STACK STATUS] Network up.
[2026-02-10 15:30:46] info: 	zh:ember: [INIT TC] Adapter network does not match config. Leaving network...
[2026-02-10 15:30:47] info: 	zh:ember: [STACK STATUS] Network down.
[2026-02-10 15:30:47] info: 	zh:ember: [INIT TC] No valid backup found.
[2026-02-10 15:30:47] info: 	zh:ember: [INIT TC] Forming from config.
[2026-02-10 15:30:47] info: 	zh:ember: [INIT FORM] Forming new network with: {"panId":64685,"extendedPanId":[228,202,171,92,51,31,109,113],"radioTxPower":5,"radioChannel":11,"joinMethod":0,"nwkManagerId":0,"nwkUpdateId":0,"channels":134215680}
[2026-02-10 15:30:47] info: 	zh:ember: [STACK STATUS] Network up.
[2026-02-10 15:30:47] info: 	zh:ember: [INIT FORM] New network formed!
[2026-02-10 15:30:47] info: 	zh:ember: [CONCENTRATOR] Started source route discovery. 1247ms until next broadcast.
[2026-02-10 15:30:47] info: 	zh:controller: Wrote coordinator backup to '/config/zigbee2mqtt/coordinator_backup.json'
[2026-02-10 15:30:48] info: 	z2m: zigbee-herdsman started (reset)
[2026-02-10 15:30:48] info: 	z2m: Coordinator firmware version: '{"meta":{"build":397,"ezsp":14,"major":8,"minor":0,"patch":2,"revision":"8.0.2 [GA]","special":0,"type":170},"type":"EmberZNet"}'
[2026-02-10 15:30:48] info: 	z2m: Currently 0 devices are joined.
[2026-02-10 15:30:48] info: 	z2m: Connecting to MQTT server at mqtt://core-mosquitto
[2026-02-10 15:30:49] error: 	z2m: MQTT failed to connect, exiting... (Connection refused: Not authorized)
[2026-02-10 15:30:49] info: 	z2m: Stopping zigbee-herdsman...
[2026-02-10 15:30:49] info: 	zh:controller: Wrote coordinator backup to '/config/zigbee2mqtt/coordinator_backup.json'
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash: ASH COUNTERS since last clear:
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash:   Total frames: RX=68, TX=126
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash:   Cancelled   : RX=0, TX=0
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash:   DATA frames : RX=67, TX=57
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash:   DATA bytes  : RX=1116, TX=697
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash:   Retry frames: RX=0, TX=0
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash:   ACK frames  : RX=0, TX=68
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash:   NAK frames  : RX=0, TX=0
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash:   nRdy frames : RX=0, TX=0
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash:   CRC errors      : RX=0
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash:   Comm errors     : RX=0
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash:   Length < minimum: RX=0
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash:   Length > maximum: RX=0
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash:   Bad controls    : RX=0
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash:   Bad lengths     : RX=0
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash:   Bad ACK numbers : RX=0
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash:   Out of buffers  : RX=0
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash:   Retry dupes     : RX=0
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash:   Out of sequence : RX=0
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash:   ACK timeouts    : RX=0
[2026-02-10 15:30:49] info: 	zh:ember:uart:ash: ======== ASH stopped ========
[2026-02-10 15:30:49] info: 	zh:ember:ezsp: ======== EZSP stopped ========
[2026-02-10 15:30:49] info: 	zh:ember: ======== Ember Adapter Stopped ========
[2026-02-10 15:30:49] info: 	z2m: Stopped zigbee-herdsman
[15:30:51] INFO: Preparing to start...
[15:30:52] INFO: Socat not enabled
[15:30:53] INFO: Starting Zigbee2MQTT...
Starting Zigbee2MQTT without watchdog.
Onboarding page is available at http://0.0.0.0:8099/
[15:33:11] INFO: Preparing to start...
[15:33:12] INFO: Socat not enabled
[15:33:13] INFO: Starting Zigbee2MQTT...
Starting Zigbee2MQTT without watchdog.
Onboarding page is available at http://0.0.0.0:8099/
[15:34:34] INFO: Preparing to start...
[15:34:35] INFO: Socat not enabled
[15:34:36] INFO: Starting Zigbee2MQTT...
Starting Zigbee2MQTT without watchdog.
Onboarding page is available at http://0.0.0.0:8099/
[15:35:29] INFO: Preparing to start...
[15:35:30] INFO: Socat not enabled
[15:35:31] INFO: Starting Zigbee2MQTT...
Starting Zigbee2MQTT without watchdog.
Onboarding page is available at http://0.0.0.0:8099/
[15:36:26] INFO: Preparing to start...
[15:36:26] INFO: Socat not enabled
[15:36:28] INFO: Starting Zigbee2MQTT...
Starting Zigbee2MQTT without watchdog.
Onboarding page is available at http://0.0.0.0:8099/
[15:41:32] INFO: Preparing to start...
[15:41:33] INFO: Socat not enabled
[15:41:34] INFO: Starting Zigbee2MQTT...
Starting Zigbee2MQTT without watchdog.
Onboarding page is available at http://0.0.0.0:8099/

Le dongle est bien présent dans appareil :

Mais impossible d'ajouter un appareil ! Je dois probablement faire un truc à l'envers.

Merci pour votre aide.