Screwed my website up!

I was desperate to improve the speed of my website and saw the autooptimize plugin and followed a guide on how to set it up
It has removed all my images on the front page and taken away the black header leaving my website looking awful.
I have undone the settings that I made and even tried deactivating the plug in and still my site is left looking so bad!
HELP!

The page I need help with: [log in to see the link]