Unable to receive double authentication SMS.

I haven't received the SMS verification code for a long time, which may be caused by the following reasons:

First, the number of acquisitions exceeds the limit.

Solution: Only 20 verification codes can be obtained every day. If you have exceeded the quantity today, please try again tomorrow.

Second, the mobile phone business does not support it.

Solution: At present, it has supported all market segments of the three major mobile operators in China.

Reason 3: Mobile phone security software interception (for smartphone users who have installed security software)

Solution: Open the mobile phone security software, temporarily turn off the interception function, and then try to get the verification code again.

Reason 4: SMS gateway is congested or abnormal.

Solution: When the SMS gateway is congested or abnormal, the sent SMS will be delayed or lost. I suggest you try it again after a while.