The best thing about this software is that it's easy to use and has all the features you need right there at your fingertips! The only downside I can think of would be if you're looking for something more specific (such as coupons or promo codes), then maybe it could be difficult to find what you are searching for.
However, having said that I don't have any suggestions regarding how to improve their service because they do everything well enough! This was a great purchase for my business, especially since we were able to get started without paying anything up front.