Open Graph Meta Data not shown on Category or wooCommerce pages
Mashshare open graph integration is only used on singular blog posts and not on multiple category pages like archives, category pages or for example the WooCommerce product pages.
This is done for technical reasons. There are also plugins who are more specialized for publishing open graph data on such non singular pages. The YOAST plugin is our recommendation therefore. Just install it beside MashShare and YOAST will add open graph meta data on all pages where MashShare does not. Both plugins are 100% compatible to eachother.