Customer Support
If you’re home page is displaying your latest posts then you cannot use a featured image. This is also true if you create a static page to display your blog. As WordPress ignores the featured image metabox. In these cases you have to select Custom Image for your Header Element Background.
To set a different page as your blog, first create a new Page, name it Blog ( or whatever ) and save. Then in Dashboard > Settings > Reading you will be given the option to select a static page to display your latest posts.
