Two options are open to you.
1: Email the company who makes the program for help. You paid for their product, so that should entitle you to some support for these types of situations.
2: Get a refund and use one of the many free PDF creation programs.
I paid for a pdf conversion thing a couple of weeks ago, I am not able to get into it or figure how to install it properly, iI have instructions, but they do not work for me, PLEASE PLEASE HELP