Hi all,
I wanted to raise a concern about this app. It works great but the micro data used are data-vocabulary whereas most websites use the recommended schema micro format. So, using this app mix data-vocabulary and schema format. This is causing issues with google microdata analysis.
See this thread in google webmaster forum: https://productforums.google.com/forum/#!searchin/webmasters/missing$20price$20madness/webmasters/bCZfOXN62nI/_5_y_gMtfuIJ
As a proof all my website using the same schema without the "Product Reviews" app are not detected as containing error in google webmaster tool.
I hope this encourage Shopify to address this issue.