I checked out your setup. I noticed a few things:
1. The DIVI theme settings (ePanel)>navigation options have the pages marked as excluded from navigation.
2. The home page settings have the page template as “blank page”, change to “default template” and set the hide nav before scroll to “off”
In addition, by activating the Divi Builder the page title is hidden by default.
Please familiarize yourself with the Divi Documentation found here: