5. Make sure the router password is correct.
6. Make sure the device has been added using 2.4G WiFi band. Enable
the Wi-Fi broadcast function and do not set it to hidden mode.
7. Make sure that the encryption method of the router's wireless
setting is WPA2-PSK and the authentication type is AES, or both are set
as automatic. 11nonly is not allowed in wireless mode.
8. Make sure the Wi-Fi name does not contain any Chinese
characters.
9. If the number of the router's connected devices reaches the limit,
