Game time card

[HEC]

OK - what does it exactly say when you try to redeem the code? Is it European card and is your SE account also European? Are you by any chance trying to enter the code via "Enter bonus code" option (it will not work there)? Use the "Recurring subscription Setup" button and then on next screen click on "Click here to redeem Game Time Card". Next time you'll see "Subscription Payment: Game Time Card" button in the main menu which you can use to add new cards.

The "crossed" O (Ø) is actually zero ...