Hi there,
I think for some server issue some of the images didn’t imported properly. Anyway I’ve updated those image field except the testimonial ones. You can check now. About the contact form all you need to do is save the homepage & it’d load properly currently it’s loading perfectly. About “explore the world” text you’ve already updated it & written “Mindtastik” that’s the field where you can update this para. About the blog it seems to be ok to me in blog pages. Please let us know if you’ve any more query regarding the theme.
Best Wishes.