Hello,
Installing demo content doesn’t create a site that is an identical copy of our demo site because it has a large number of pages and images that take too much time to complete.
You can visit our demo website. Right-click on the missing images, select “Save Image As”, and upload them back to your media library.
If you need all demo content restored, you may reset your site using a plugin like “WP Reset” (but this will erase all existing content).
Then, reinstall the demo completely, ensuring that all images are imported fresh.
Best Regards,