How do I activate a Runescape membership card ?

I just bought a Runescape membership card and I don't know how to activate it please i need detailed instructions!!!!!

There's a code on the card. In the Runescape interface, there's a place to enter the code to start or extend a subscription. Do so.
teslafan100 (author)  RavingMadStudios7 years ago
Yes but when i do that they want my credit card info?! :(
Are you sure you're clicking the "Pay with Runescape Prepaid Membership Card" button? The whole point of the prepaid card is that you don't need a credit card to sign up for the game.
teslafan100 (author)  RavingMadStudios7 years ago
Ok thank you its working now :)