Twenty Eleven Featured Image Problem

Hello all,

I am pretty new to WordPress and BlueHost, but I managed to get my site up and running to what I wanted it to look like….until tonight when I visited my site and found that my featured images header only worked for a few of my pages. Before, it worked on all of my pages.

I recently created categories to help sort my posts so I don’t know if that had anything to do with the mishap. I am at a loss as to what to do. I went back and tried to change a few things in my child theme to no avail.

Yes, all of my featured images are 1000×288 and I have tried deleting them and re-inserting them, but that did not help.

Also, when I click on each page, only the ones that have the functioning featured image get bold text. It’s really weird and just started doing this.

Please help. I thought I was done with the site, but of course it never works that way. Thanks!

https://www.alwaysnextseason.com