Fun With FantaMorph

I downloaded the trial version and tried to use a serial crack (sorry but i'm a student and i dont have much money!). It wouldnt work so i have now bought it. The problem is that everytime I start the program it tells me that a crack was used last time and to go buy it, which i have, there is no option to enter my serial code. I've tried deleting the program and reinstalling but i still get the same errors. What should i do?

Thank you for your purchase decision.
You won't be able to register the program directly due to the crack code is still remained in your system even if uninstall and reinstall the software. Our supporters will tell you how to work this out by email.
Again, we appreciate your purchase and hope you enjoy using FantaMorph.