Post/Page Content No Longer Shows on ANY Theme…

I made a website for a friend a year ago and a couple days ago she decided she wanted to make some changes without much knowledge of coding herself. Something she changed has me confused myself as now, no matter what theme is used, the content within posts/pages/archives doesn’t display, no matter which theme is selected, even TwentyTen. Everything else shows up fine, title, comments, etc, just not content. I’ve even tried reverting back to old versions I have and adding <?php the_content(); ?> and it still doesn’t display each posts’ content. I’ve checked each page in the editor and all the content is still within the visual/html editor… so I can’t seem to figure this one out. Website here: https://tinyurl.com/2fyffdy