Just sign the Kunshan SMS verification code, but I can't send it. What's going on here?

1. Wrong mobile phone number: Please check whether the mobile phone number you filled in is correct, including area code and mobile phone number.

2. Network failure: unstable network connection or website server failure will also lead to the failure of sending verification code.

3. Poor cell phone signal: Poor cell phone signal or inability to receive short messages in the area may also cause the verification code not to be received normally.