Licensed CD Install

My son received a Boinx Software Kagi Store CD for Boinx iStopMotion 2.x Express Singer User. We attempted to install it on his MacBook Pro (running updated Lion operating system) and we cannot enter the license key shown on the CD. When we try to enter the key we get a message telling us that only the letters A to F and numbers 0 to 9 are valid. His license number has other characters in it. He was anxious and simply installed it ‘over’ a demo version. Could that have something to do with our issue? I’ve removed the application and tried again but we keep getting the demo license. Any information would be greatly appreciated. MGB