Grimandi calzature review for Google & YouTube

The app has 4 major problems: 1) Sometimes it does not synchronize well the attributes with merchant center (for example GTIN or EAN) with a large decrease in performance in the display of free product sheets on Google 2) It is not possible, for products that do not have an EAN or GTIN code, to assign the MPN code or the product SKU through the additional rules of Merchant Center 3) It is not possible to manage list prices and discounted prices 4) It is not possible to manage any Metafields to be assigned to products through the Merchant Center rules Update 31/12/2021 No one from support emailed me