How to activate Filefox Premium Voucher:

1. You will receive a Filefox premium voucher like this: 79xxdlnd5774la

2. You should be log in : https://filefox.cc/login.html

( If you haven't account at Filefox, you just need to sign up: https://filefox.cc/?op=registration )

3. Make sure you are logged in. Then access this link: https://filefox.cc/?op=my_account

4. Put your voucher code in field "Apply Premium Key", and click on "Apply"