Gen Con is instituting an update to our credit card system. Account holders can now update their credit card information at any time, not just when they purchase badges or tickets.
 
This change will necessitate all account holders to initially re-enter their information into the system. You can do so now by going to your “My Payment Methods” when you sign into your account or just do it on checkout when you buy a badge!

Mike

Worked like a charm, thanks Mike!  Great feature, as it is one less thing slowing down checkout when time is critical :)