I purchased it last month, and I think it's a good product. I don't know why kpark829 experienced that.
However, over the past 2 weeks or so I realized there were new questions constantly being updated so maybe kpark you should give it a try again. I'm assuming you probably bought it a long time ago like you said, so that might have been the case then.
I'm happy with my purchase. Plus, I was having trouble with using other products on my mac, and idatprep works smoothly on my mac 🙂