actual mobile version differs immensely from theme preview

Hey guys,

Why does the mobile version of my Gateway suddenly look differently from the desktop version? Upon checking the preview for mobile devices, I noticed it should still be the same. It is not. All the pictures of the excerpts are gone, there is no header anymore and there are different colours I never chose. (laurelkoeniger.eu) Is this an error or something wanted in the latest update? I tried to view it from different mobile devices, even from different countries. It is everywhere the same. All the pictures are gone.