Setting--> Devices & Services --> Integrations --> Add Integration --> Search for MQTT --> Click to configure information such as domain names and ports.
mqtt broker: mqtt001.tumblevd.com
Port:6000
Username:your email
Password:your password
(If it's a quick login via Apple or Google and no password has been set, the default password is "semmeter")
Copy the configuration code to configure.yaml (the configuration file can be configured on the app for the "Home Assistant" page and downloaded.)
1:Set the IP address, port, account number and password of your MQTT server for the SEMMETER device.
2:Configure your Home Assistant to connect to your server.