For your reference, please try the following methods:
1. If the network is connected by a network cable, changing the location will not affect the normal usage of the camera;
2. After changing the Wi-Fi name or password, you need to reset the camera and reconnect it to the Mi Home/Xiaomi Home APP. Please delete the bound camera on the APP, and then press and hold on the reset button for 7 seconds to rebind it;
3. Please keep the camera close to the router, or use a network cable for network connection.