I suggest you to completely remove the application from your computer using Add or Remove Programs feature:
If you use Windows XP or bellow you can go to Start > Control Panel > Add or Remove Programs. In the Currently installed programs box, click on the CreaToon program and then click Remove.
If you have Windows Vista or above you need to go to Start > Control Panel > Programs > Programs and Features. Select the CreaToon application and click on Uninstall.
After that, go to the official web page and download and install the software by pressing the full version button. Also, download the Unlock tool and extract the installer using WinRAR. Open CreaToon application, launch the Unlock tool and press OK after you will receive the CreaToon is now unlocked, please restart CreaToon message.