Free but useless

On the plugin page (wordpress.org), Screenshots, “This is the settings page of the plugin you can find inside the YIT Plugins menu”. No, this is not the plugin page. I have installed this plugin and on setting page I have two notes 1- Enable Twitter sharing: Note: due to a change made by twitter, you can not be sure that the tweets are published and 2- Enable Google+ sharing: Note: because of a bug unresolved by Google, the “Share” button could not generate the coupon correctly.
And “DOCUMENTATION OF YITH WOOCOMMERCE SHARE FOR DISCOUNTS” (free version), Regarding Facebook “the sharing of each product generate a coupon of the 10% off on that particular product, once added to cart. You can share the same product more than once only after 24 hours have passed”.