Method 1: reset the table lamp, and then use another mobile phone to open the hot spot, connect your mobile phone to the hot spot, and let the table lamp also connect to the hot spot network when the network is connected, after the connection is successful, go to the app to see whether the firmware of the table lamp needs to be upgraded, if it is prompted to upgrade the firmware, click upgrade, after the upgrade is completed, turn off the hot spot. Then use a lamp to connect to the home wifi network.
Method 2: If the above method is not possible, then we can try to turn on the GPS positioning function of the phone when connecting the Mi home app.
Method 3: Turn off the 5G band wifi network of the home router and use the 2.4G band wifi network.