Hi, thank you for purchasing our theme
You could set “Featrued Image” for posts, the featured image could be shown on portfolio list. The only “Gallery”and “link” format post will be shown on portfolio list.
refer the video guide: https://www.youtube.com/watch?v=JBeEQjp8lKw
If it doesn’t work, please send your wp-admin(url/user/pass) via
my profile contact form , I’ll log in to check it.