It might be the Yoast plugin that is causing the problems.
I don't have that plugin installed on my sites and there it's working as it should.
First of all the title tag on all your store pages is the same!
<title>Compare Prices - Save On Golf</title>
This is a no-no in SEO.
Looks like the Yoast plugin is overwriting the titles from Datafeedr.
For your detail pages you should see the product name and category name in the title
<title>[product.name] | [category.name] | </title> as defined here
The Factory > Your Store > VIEWS > PRODUCT DETAIL > Default > View menu > View <head> Elements
Can you try disabling the Yoast plugin(s) entirely to see what the Easy Social Share Buttons does in that case?
If you do, don't forget to uncheck the Yoast Google Analytics option in Easy Social Share Buttons plugin > Main Settings > Administrative Options.