Atsushi Hori

I had the same problem. In my case, the 'mqtt_main_topic' was left unchanged ('switchbot'). When I changed it to 'homeassistant', then it was fixed.

Well, did you check the MQTT broker status by using MQTT Explorer app? If so, may I check its output?

Here is mine; [MQTT-Explorer-Screenshot.pdf](https://github.com/devWaves/SwitchBot-MQTT-BLE-ESP32/files/11131977/MQTT-Explorer-Screenshot.pdf) I guess your Bluetooth MAC addresses of switchbot devices are wrong and Switchbot-MQTT... cannot find switchbot devices.