I’m just looking for guidance on where to start looking for problems. This isn’t a site I developed, but since I know some about WordPress, I’m helping out.

Initially my suspicion was a plugin or theme. Like this question suggests — Site content not showing

However, one thing I noticed is that when I logged in via wp-admin and then view the site, everything is as expected.

Has someone encountered this before, where all content shows once logged in, but only the header and footer show when not logged in?