I agree, ask for your money back. First of all, many states require the license just to perform design for compensation. Second, many states will not allow you to design hardscapes without a license. Third, you can get sued regardless of a license, however a license can make being certified as an expert witness easier so your testimony holds more weight than the “average joe”. Fourth, as a LA (or designer) we are problem solvers. Designing around constraints while preserving you design intent takes extreme creativity. Also, public projects affects more lives than just a single reidence–which you may limited to by not being licensed. Having a license just opens the opprtunity as not to limit yourself except of that of your capabilities. Just do not design something beyond your competency, and you will minimize your risk. Good luck with your decision, and get a refund.