Their software doesn't work properly. They simply have bugs in their code. With them I had all my state taxes refunded because I moved from one state to another. That can't be true. If I filed with them, I would pay penalty and interest later. 100% sure that they would not reimburse for that. Because when I had a chat with "customer service", they told me that I have to contact a tax professional and check the return by myself before filing. So why use their service if they don't know what they are doing?
Bottom Line: No, I would not recommend this to a friend