Our theme currently does not support the featured image for the archive view just like in your case. We will think of adding the featured image for archive view in our version updates. However, you could any of the ‘blog’ templates to make the blog appear just like in our demo. For that, create a page. Look for the ‘Page Attributes’ option box. Choose any of the ‘Blog’ templates from the dropdown for ‘Template’ option. Then click on ‘Publish’. Hope this helps.