Amalia J & Boutique review for Shop

This app is great with exception of Shop Advertising campaigns, they offer campaigns base on the sale with a ROI that you select but it is a lie , as i just had a sale for $470 and they charge me $360 for advertising charges and my ROI was 2.5 . So $360 is not an ROI of 2.5 .They anwser that in the small letters the ROI is not guarantee and they will charge you what they want and if you cancel the sale they will also charge me the $360.