If you have lost a previously purchased key, you can contact their support team with your proof of purchase to have it recovered.
with your original purchase details to have your license reissued. The Trial Version: Cabri Ii Plus 1.4 5 Serial Number
Q: What is the difference between a serial number and a license key? A: A serial number and a license key are often used interchangeably, but a license key may include additional information, such as the software version and expiration date. If you have lost a previously purchased key,