Shortcode to add to page

Your instructions say: You can also use a shortcode to add a Constant Contact form to a specific area in a page or post. Everything is done visually.
I can’t figure out what shortcode to use. Your instructions say to use something like this – [mailmunch-XYZ] and it would be provided upon setup, but I never saw anything like this.

Can’t find this: Easily add Constant Contact forms to pages and posts with a button in the page/post editor

You can also use a shortcode to add a Constant Contact form to a specific area in a page or post. Everything is done visually.

https://ww.wp.xz.cn/plugins/constant-contact-forms-by-mailmunch/