Follow the steps below to redeem a Game Time Card on your account:

(1) Log into FINAL FANTASY XIV: Mog Station (http://sqex.to/Msp)

(2) Select "Account Services" → "Renew Subscription (Game Card)"

(3) Follow the on-screen instructions to complete the process.
http://support.eu.square-enix.com/fa...la=2&kid=68087