1) Make sure that the program doesn't connect to the internet.

2) Go to Tools > Settings > CopyToDVD > CopyToDVD Settings > About..

3) ..and use one of these keys:

F8LG4-BZTVE-V8BNH-LRM4Z-NZFK7-2

FHA3E-GYQ28-8G4QZ-PC5GT-E8G3P-K

8VCKR-RK65X-U8LYG-F9VR7-VFBB8-S

4T76Z-USHF9-E4JEX-VYNSJ-ZQ4HR-3

Enjoy

Blindwrite 6.3.1.6

YYJW5-HVCDV-MAB5K-PDH3G-ZG57P-2