HELP

I have downloaded the free version of this program and am thinking about purchasing it. However I am having some problems which is making me rethink my purchase. I used it once and it worked great but when I went to open the program again I will not open. It shows up as I have had it on my system for 8 days and that I have the option to purchase. Then it brings up the little starting screen which disappears and nothing else happens. I have tried to uninstall and reinstall the program but that did not help. I am stuck and very fusterated. I thought this was going to be the program that I have been looking for but now I am thinking that it may not. Thank you Monique