@Felli
I dunno what to say, I had a red header saying site could not be loaded, and then CTRL - F5 opened up the Landing Page extension options.
I know if you input improperly formatted code inside the Landing page extension you can fubar your site.
Then you need to manually edit the css from nano or vi to restore site.
Because of this, as a safety precaution, i also open 2 browser tabs to admin, in the event one crashes, I goto the next tab and re-save original settings.