What is the lock of the SMS sending function of WeChat official account?

Your subscription number is not certified, is it?

1. User-defined menu setting action for unauthenticated subscription number = "Jump to Web page" only supports jumping to graphic materials, not to other websites.

2. The user-defined menu setting action with unauthenticated subscription number = "Send Information" temporarily does not support plain text type.

3. User-defined menu function in developer mode is not supported.

You need to be certified before you can.