How to activate:

• Go HERE.
• Choose "Activate Pre-Paid Card" button.
• Log in or create RuneScape account.
• Enter the received key code at "Enter Pre-Paid Card Code" window.
• Redeem the key and activate your subscription.

A membership subscription is a process of a RuneScape player paying the fee to become a member and access the pay-to-play version of the game. When players subscribe, they receive members credit that allows them to access the pay-to-play version of RuneScape.