After the WeChat service account nickname is determined, it cannot be modified except for special reasons. (This refers to after certification)\x0d\Before the public account certification, you can choose a name. During the certification, you have an opportunity to change the name. After the name is modified, it cannot be modified after the certification is passed. \x0d\The WeChat official account name can be set to consist of 2 to 16 Chinese characters or 4 to 32 characters (including simplified, traditional Chinese, English, and a mixture of upper and lower case and numbers). The public platform name can be repeated. Once the WeChat official account name is registered It will not be modified except under special circumstances. \x0d\The public platform name can be repeated means that before the public account is certified, if the name has not been certified, it can be repeated. If someone has certified the name and then applies for a public account, repeated names are not supported.