Hello Mari-
Thanks for reaching out! I took a look at your site, and it looks like the plugin that keeps track of your post views is called the Post Views Counter, which is a 3rd-Party plugin, so I can only speculate what might be wrong, but I’ll do my best to help.
The biggest thing that sticks out to me is that you’re using WP Super Cache to speed up your site. That plugin is normally provided by your WordPress Host, DreamHost. Post Views Counter offers several methods to count the views, but it does note that if you have caching enabled, you should make sure to use either the JavaScript or REST API methods.
You can find these in Settings > Post Views Counter > General:
If you’re still having trouble, I’d recommend reaching out on Post View Counter’s dedicated support forum for more help.