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Haikang added the host status display.
1. Wrong IP address or port number of the device: Please check whether the IP address and port number of the device are correct, and ensure that the information entered is consistent with the actual IP address and port number of the device.

2. The user name or password of the device is incorrect: Please check whether the user name and password of the device are correct, and ensure that the information entered is consistent with the actual user name and password of the device.