I just updated a page on the website, not the homepage, and then clicked to view the change. It was fine, but when I clicked to navigate to the homepage the only thing that was showing was my header image. Menu and all home page content is not showing up, even though it is fine in the 'pages' section. Now the other URLs aren't working either.
jjj reported that the issue has been solved in the comments to the original question:
...In the mean time I did some trouble shooting with the plugins page and it turns out the 'sitemap' plugin may be the culprit. It works fine after I deactivated that plugin. I will definitely debug however. Thank you again