This is the JS error that comes up.
Timestamp: 14/04/2016 21:27:32
Error: Error: Syntax error, unrecognized expression: .site-header a[href*=#]:not([href=#])
Source File: https://greenjujukitchen.com/wp-includes/js/jquery/jquery.js
Line: 2
It’s related to WP updating the jQuery library to 1.12, and a JS file from your theme ( if you disabled all plugins and it still breaks, then it has to come from the theme ) using this a[href*=#]:not([href=#] code, while it should be a[href*=’#’]:not([href=’#’] ( there are ” around the # ).
The code without the ” around the # worked with older jQuery versions, but not anymore with the one that ships with WP 4.5 ( This is not a bug in WP, it should have been ‘#’ from the beginning, but it always worked without it ).
If you for a second switch back the default WP theme, then it will very likely start to work again. If this happens you will either have to contact the theme author, and ask him to fix it, or if you’re comfortable with code, then you can just search through the theme files for a[href*=#]:not([href=#], and change it to a[href*=’#’]:not([href=’#’] yourself.
You can read more about it here and here ( assuming you have FB ).