Add [subpages_expand] to any parent page. All child pages' titles are shown as links that expand to content when clicked
A. No, only on pages
A1. Make sure you spelled it correctly
A2. Make sure you added the shortcode to a page, not a post.
A3. Make sure your page has sub-pages.
A4. Verify that your parent page and all child pages are published (not draft or pending)
A. You have an HTML error in one of your pages. If you have mismatched
div tags, the child pages after that can get "trapped" in the first child's content.
A. This error usually occurs when you try to have this shortcode on a child page. You cannot nest this shortcode (i.e., have it on a parent page and one of the child pages).