Well, it looks like your staff posts are using the same template as your blog posts (pretty common). This is a result of how your theme treats different types of posts.
You’ll want to create a custom template named single-staff-member.php for your single staff member pages (this would have the bonus of fixing the issue with the display of the staff bio on mobile, which right now is illegible) and place it in your site’s child theme (hopefully it has a child theme!).
To build this template, you’ll need to reference the “templates” menu item in the plugin.
If you’re not familiar with how to write a template, there are some great tutorials floating around, but I’d recommend starting with the “single.php” file, duplicating it, and editing it to your liking.
Hope that helps!