Google tag assistant is telling that the code UA-xxxxxxx is outside de head tag.
I investigated a bit, but i don’t have the expertise to change that in the theme.
In ‘Theme Options’ the code is in it’s right place.
placing the Analytics code inside the “head” tab is an official recommendation by Google, yet since it’s asynchronous, it can really be placed anywhere inside the page’s code (please see this and this source for more information and explanations). So as long as the code works and is actually recording the visits, it should be totally fine.