It's pretty simple to get it.
3 steps:
1. Head over
here2. Enter desired email
3. Within the email, you should receive a link to download the VPN and a serial code for 1 year.
Free serial: 7336-650C-6BE6-0F81-147C-6094-FD0F-E41B
Enjoy!
Note: You can use recyclable emails to essentially get many serials.
If it works, please post it so that others would be able to see it.