Dyson pure+cool do non connect anymore

Good morning, having issue with Dyson HACS integration (1.5.1); it worked for a week, now it doesn’t.

Environment HAOS 2025.3.4

I have made some test but no solution yet:

  • reinstalled hacs integration (with many reboot …)
  • reset Dyson
  • changed IP address
  • changed account name.

Here after is the log of the test with manual setup and using different device :
Pure Hot+Cool Pure Hot+Cool (New) :

2025-03-28 09:22:37.016 DEBUG (paho-mqtt-client-2cvlRZEkQfvXXK3Dh4VIQ8) [custom_components.dyson_local.vendor.libdyson.dyson_device] Connected with result code 5
2025-03-28 09:22:37.019 DEBUG (paho-mqtt-client-2cvlRZEkQfvXXK3Dh4VIQ8) [custom_components.dyson_local.vendor.libdyson.dyson_device] Disconnected with result code 5
2025-03-28 09:22:38.020 DEBUG (MainThread) [custom_components.dyson_local.config_flow] Failed to connect to device: DysonConnectionRefused, 
2025-03-28 09:22:40.800 DEBUG (paho-mqtt-client-0QTzIDAfFoRNg0O060dbzI) [custom_components.dyson_local.vendor.libdyson.dyson_device] Connected with result code 5
2025-03-28 09:22:40.801 DEBUG (paho-mqtt-client-0QTzIDAfFoRNg0O060dbzI) [custom_components.dyson_local.vendor.libdyson.dyson_device] Disconnected with result code 5
2025-03-28 09:22:41.802 DEBUG (MainThread) [custom_components.dyson_local.config_flow] Failed to connect to device: DysonConnectionRefused, 

Any help ?
Looking forward for your news
Fausto

Called Dyson service; they requested to sent it to assistance. Today Dyson sent me back one new. Now it’s working