Hello @lanalina,
Thanks for reaching out. Yoast SEO analyses the default WordPress content areas like the title, URL, and the main content box (WordPress editor). Since you may be adding your content via another plugin’s shortcode, Yoast SEO may not detect it by default.
If you are using a plugin or theme that doesn’t send or incorrectly sends their content to our page analysis, please reach out to the author or developer regarding the integration feature. Our development team provides information about creating a custom integration here.
Although our plugin does not detect your content and shows an incorrect analysis report, this does not affect how search engines crawl and analyse your site. Search engines process the front end of your site and will detect your content.