Changes working on some pages/posts but not all

I am digging this plugin quite a bit.

I have a couple issues that I am trying to solve. The first of which is the new styling which I am applying, is not being applied across all of the pages and posts. Here are two pages to show what I am referring to:

https://longdistancehiker.com/appalachian-trail-photos/

https://longdistancehiker.com/mtn-meister-podcast/

Check out the Top Navigation as well as the Footer Box title text.

Any clues on where to begin to get changes applied across the site. I had made some attempts to use googlefonts from within the editor in the dashboard, but these would be over-ridden by Easy Google Fonts, right?

https://www.ads-software.com/plugins/easy-google-fonts/