***How to activate Datafile Premium Voucher:
1. You will receive a premium voucher like this: 9e0bc2e998982e2
2. You should be log in : https://datafile.com
( If you haven't account at Datafile, you just need to sign up: http://www.datafile.com/registration.html )
3. Make sure you are logged in. Then access this link: https://www.datafile.com/getpremium.html
4. Find this text "If you have invite code", then click to "Click here".
"Premium Voucher" tab will be appeared, paste Premium Voucher to "Invite code", and click ACTIVATE
