Some of my pages are suffixed properly such as index.html and about.html.

However, some of my pages are suffixed incorrectly such as services.html.html and contact.html.html.

The correct page names services.html and contact.html point to incorrect "vintage themed" CoffeeCup pages. However, I have confirmed in Manage Project that the Page Name box has the correct values.

Your page names are wrong
They don't need the ..html suffix

so your index page should just be called index
not index.html etc etc

Awesome. Thanks!