What is it that the police uncle app can't receive the verification code?

1, the number of acquisitions exceeds the limit. Only the required number of verification codes can be obtained every day, which may exceed today and try again the next day;

2, mobile phone security software interception. Turn on the mobile phone security software, temporarily turn off the interception function, and then try to obtain the verification code again;

3. The SMS gateway is congested or abnormal. When the SMS gateway is congested or abnormal, the sent SMS will be delayed or lost, and it will be retrieved.