If the Xiaomi Smart Camera C201 fails to connect to the Xiaomi Home App, please follow the troubleshooting steps:
Exit the Xiaomi Home App. Then, perform a reset on the Xiaomi Smart Camera C201 by pressing the reset button. After resetting, attempt to reconnect the camera to the App.
Restart your router to refresh the network connection. Additionally, move the camera closer to the router to improve signal strength.
Check your phone's Wi-Fi network. You can use your phone's hotspot to test the connection. If the hotspot works, there could be a Wi-Fi issue. Contact your Wi-Fi network operator to resolve the issue.