Why do parents of Yukangma show that the application results are not supported?

The parents of Yukang Code show that the application results are not supported. The reasons are as follows

The verification code is issued by the SMS gateways of various operators. If the number of requests is too large in a short period of time (such as rush hour), the verification code will not be received. It is recommended to wait for a while and try again.

in addition, if the user actively prohibits the value-added service, it needs to be reopened before receiving the verification code normally. If you still can't receive the verification code, please contact the customer service of your operator immediately.