Hey @thom, based on your screenshot, you’re on a static page.
CMS elements can only be accessed through the CMS template pages (those pages are purple, and show up at the bottom of the page list under ‘CMS Collection pages’).
Since it looks like you’re using MemberStack, you have the option to access some of the data from MemberStack and show it anywhere on your Webflow site using the ms-data attributes. (See more about that here).
Hope this helps!
- Mackenzie