Your account's license will automatically update to S2, so when you activate it ingame, you will have S2.
Quote from RC-Maus :Make a account at https://www.paypal.com And how to transfer money in my paypal account without card?
My favorite internet payment option goes to Skrill ( Moneybookers ) Done some purchases for Steam and some random money transfers. Works well and somewhat easy to use. www.skrill.com ( incase you do not want to support PayPal, or any other reason )