Site Will Only Show Front Page

Hello Everyone,

I recently started working at a sign company and took on the responsibilities of up keeping their website. I did not create it so I am unaware of a lot of things. I recently updated the WordPress to the newest version as well as all the plugins. Now the site will only show one page. I’ve clicked on the links for other pages and I am re-directed, yet it only shows the same thing. I’ve looked into the pages contents and they show that they do in fact have the content in them, but I just cant see it. Any idea on what may be happening!? The web site is https://www.signhit.com