We have checked your site elissiaphd.com. Actually you have not selected the home page template. Kindly follow the steps given below to set it up.
Step 1: Go to Dashboard >> Pages >> Add New, enter page name and select template as “Home Page” Template from Page Attribute
Step 2: Publish this page
Step 3: Go to Dashboard >> Settings >> Reading, select “A static page” then select home page as a front page.