DeMassageWinkel review for Discount Ninja Promo Engine

We installed this app because we were looking for some advanced discount options, It was the worse decision we ever made. The installation support of this app is terrible. The app didn't work for our store, but instead of helping us out immediately, they told us to wait for a couple of days or hire a developer. In the mean time we were not able to offer any discounts. In the end, the app worked, but it was making our checkout terribly slow. It took around 5 second to load the cart template, and around 20 seconds to redirect to the checkout. When I told the support about this, they told me that they couldn't do anything about it now because there developers are busy (we even offered to pay!). After that, we wanted to uninstall the app. Although they helped us with removing leftover code quite quickly, they forgot some of the leftover code, so we still had to remove the app by ourselves... Honestly I wouldn't recommend this app to any store owner. It is hard to understand that the support of this app is so terrible for a monthly payment of $70.