Fullscreen theme logo code

Can somebody tell me where i can put my logo in to this theme? (code)
I can read the codes but im not that expert!
In the theme options is an option to get there but it does’nt work.

Also, the header.php is also messed up. from the beginning so it is not easy to find the code.

http://www.rolinkaversluis.nl

(logo on homepage next to my description and logo when on artikle(says: logo image).)

Thnx!