What does it mean that this short message only removes the restrictions on WeChat?

Wechat has been reported many times and will be restricted from logging in after official confirmation.

Wechat is restricted, which will make it impossible to log in, or some functions cannot be used.

So you need to do something to lift the restrictions on WeChat. The operation process asks Du Ma, and the last step is to send a verification code to remove the WeChat restriction. This is the function of this short message.