Entire theme is not showing up

I activated the “Red Train” theme but the “face” of the theme is not showing up; i.e., the background and the text, etc. shows, but not the photo on the header.

This is the theme I want:

https://managedtasks.com/wpthemes/blog/index.php?wptheme=Red+Train

And this is how it appears on my blog:

https://ennscribe.com/clocklesshours/nfblog/

The installation instructions said this:

Move the Landzilla-Folder to /wp-content/themes/ ans activate Landzilla-Theme in Adminarea – that’s it.

However, I am on a Mac and just uploaded it into my wp_themes/red-train directory.

I could learn how to tweak the tags if someone could point me in the right direction. Thanks.