static pages not displaying

I’m having a weird problem with a WP site where the default post page is appearing instead of the static pages. The weird part is that one static page is showing up properly, but the rest aren’t. Here’s the site to see what I mean:

https://www.drgbrokerage.com/

Now the About page in the navigation works fine, but the other static pages (services, providers, contact) don’t. In the WP admin, the page content is there and they show as being published. The links seem to be pulling the page, but for some reason, the content itself isn’t appearing. Is there a setting I’m overlooking?