After complete your order with us at Prem.link/Grab8 Official Reseller, please follow these instructions:
1. Login to your Prem.link account http://prem.link/ (click to Login/Register in the top right corner of the screen)
If you create new account, then please click the link confirm on your register email
2. Make sure you logined, go to My Account page http://prem.link/account
3. Look at Voucher/StarPass Code
4. Put your premium key / voucher to that field then click Redeem.