I've been paying for the game with crysta that I added a long time ago, and it's finally run out and I've started paying for crysta monthly. I thought that SE added a method for automatic billing of credit cards but I can't find any information on how to set up my account to do so.
I tried looking around the SE account management page, and saw something about registering a payment method, but there's no indication of what that actually does. Their online help is horribly outdated and only mentions crysta.
Any help is appreciated.