Media kits
Content of Media Kit is generated from attached files to post, if checkbox „Use attached files as media kit“ in post edit form is selected. Otherwise, you must create a set of media files in the Media Kit section in the backend of WordPress - see Media Kit in the left navigation.
Media kit can be added to Cart and downloaded as a single zip file.
Make sure your media file is attached, if not go to Media, find your file, and attach. Select the post you want.