For your reference, here are some troubleshooting steps:
1. Restart your Xiaomi Smart Camera C500 Pro by unplugging it from the power source, waiting for a few seconds, and then plugging it back in;
2. Ensure that both your phone/tablet and the Xiaomi Smart Camera C500 Pro are connected to the same Wi-Fi network.
Verify that the Wi-Fi signal is strong and stable where the camera is located;
3. In the Mi Home/Xiaomi Home APP, navigate to the camera settings and reconnect camera again. Follow the on-screen instructions to reconnect the camera to your Wi-Fi network;
4. Ensure that the Mi Home/Xiaomi Home APP is updated to the latest version. Sometimes, APP updates include fixes for connectivity issues;
5. If reconnecting doesn't work, you need to reset your Xiaomi Smart Camera C500 Pro to its factory settings.
We hope the above methods can help you solve the problem. If your problem still exists, please submit your feedback on the Mi Home/Xiaomi Home APP.