There are two kinds of the demo, the standard, and the expanded demo. The standard demo only contains structures, it's like a placeholder to get you started but you'll still need to fill in to complete it. While the expanded demo is the complete demo, it contains the sliders, images, and other content as displayed on the demo.
And unfortunately, we can't distribute the slider and images used on standard demos due to copyright.
And what you imported is standard integrity demo, a skeleton of the actual demo for users to complete.