Why does the indicator of the Xiaomi Smart Camera C500 Dual blink in blue and can the camera not be used?

If the Xiaomi Smart Camera C500 Dual cannot be used when the indicator blinks in blue, please refer to the following details:
1. If the blue light blinks when connecting to the APP, it means that the camera cannot connect to the network or cannot be bound to the account. Please check whether the account password is correct and whether the network meets the camera requirements;
2. If the APP has been successfully connected, the blue light suddenly blinks and cannot be used, please check whether the network is normal;
3. Please restart the router;
4. You can also reconnect the 5GHz Wi-Fi network to have a stronger signal for indoor use.