Please check now. I’ve removed a part of custom css code from Theme Options > Custom css.
You need to replace images, that comes from our site, like https://xstore.8theme.com/demos/handmade/wp-content/uploads/sites/33/2017/02/header-bg-example.png and https://xstore.8theme.com/demos/handmade/wp-content/uploads/sites/33/2017/03/post-btn.png You can download such images and upload them into your media library then change links in your Theme Options.
Feel free to ask if you have any other questions.
Regards