Hi @Lash-L,
I am still getting the connection error almost every day, we were discussing it in this thread: home-assistant/core#151913 (comment)
In the logs, I see this:
2025-11-19 18:17:30.465 INFO (MainThread) [roborock.version_1_apis.roborock_mqtt_client_v1] [S8] Disconnecting from mqtt
2025-11-19 18:17:30.466 INFO (paho-mqtt-client-) [roborock.version_1_apis.roborock_mqtt_client_v1] [S8] Roborock client disconnected
2025-11-19 18:17:30.467 INFO (MainThread) [roborock.version_1_apis.roborock_local_client_v1] [S8] Roborock client disconnected
2025-11-19 18:17:30.468 WARNING (MainThread) [homeassistant.components.roborock] Not setting up S8 because the coordinator failed to get data for the first time using the offline client Please create an issue with the following error included: update_data_fail
Currently, what I do is disable the integration for a few hours, and after that, enable it again; sometimes it works, sometimes not.
Sometimes HA restart helps.
Please let me know if you need more logs from my end.
Thanks a lot in advance!