1. Please login into your Linksnappy account first: https://linksnappy.com/
( If you don't have an account, please register a new account )
2. You will receive a Premium key like this: LM1XLWZB572NW6SMXXXX, that you can exchange here:
3. Scroll down and find "Have a LinkSnappy Voucher?"
4. Click on "USE VOUCHER" and Enter your premium key in "Enter Voucher Code", then click "Entend"