A vendor responded to this review
You've downloaded this plugin today, but I don't see any contact with our support with information that this plugin doesn't work in your store. Did you check the user guide? What do you mean by "didn't work for me"?
In the nopCommerce 4.00 version you need to make an additional step:
Please open your theme directory/Views/Shared/_Root.cshtml file and do modification like below
Did you do that? If it will work, please change the rating.