Genesis is designed in a way that if you add a Header Logo/Image to your site then the description section disappears since you’re not using text. This is a default Genesis Framework function and not a Child theme (Epik) function.
I haven’t really seen a way around it just yet, but what you could do is add your description inside of your logo image itself. You would also need to add that text for your description in your SEO settings page so the search engines will still be able to pick up the text even though it’s not physically visible.