Hi there. Just noticed this with the theme. I notice that the site title uses the H1 element, and you also use H1 for each post/page's title. So in effect you are using H1 twice on every page. From what i recall about SEO guidelines you are only to use 1xH1 element.
For example, just now i checked Bing Search Guidelines and it specifically states this. I haven't looked up the others.
My guess then to resolve this would be for the site title to move to a lower heading level but maintaining H1 for page/post title only?
Love to get your thoughts on this so i can update the theme code on my side.
Thanks
Kimberly