The application signature of the WeChat open platform can be modified, but the function introduction can only be modified once within a month. How to connect mobile applications to the WeChat open platform: register for the WeChat open platform and log in. Click the green Create Mobile App button to create an app of your own.

Fill in basic information, such as application name, application description, and application icon (28*28, 108*108).

Fill in the development information, including the official application website and application platform information. The iOS platform needs to fill in the BundleID, and the Android platform needs to fill in the application signature and package name.

Submit for review, and it usually takes about a week to pass the review. After the review is passed, an AppID and AppSecret will be assigned, and then you can use these two IDs to integrate them into the application.