Before installing the demo data: Make sure WooCommerce has been installed and automatic WooCommerce pages have been removed.
Import the demo content
Once the theme has is active, you will see a new menu under dashboard called eCommerced Pro Import Data

1. Click Easy Demo Import
2. Scroll down and click Import Demo content

Once clicked the Import Demo Content button, the import process will begin. Let it load and do not close the page, otherwise the import will not succeed.

After a little while, the data is imported!
If you want, you can click Remove Demo Content & Import Functions to clean your theme.
Set homepage and blog page
To set the home page and blog page navigate to Settings -> Reading
Set Your homepage displays to a static page
At homepage select Home
At Posts page select the blog page you want, for now I choose News Archive with Sidebar
Set Permalinks
Sometimes, during the the import process the permalink structure is set wrong. To fix this go to Settings -> Permalinks
Then select Post name