2012-10-23 14:46:55 UTC - We have identified a problem processing certain credit card transactions.
2012-10-23 15:14:53 UTC - Our credit card processor is declining all MasterCard transactions. Please use an alternate card if possible. We are working with the processor to resolve the issue.
2013-01-08 13:13:45 UTC - After many months of discussions and subsequently development, we have opted to switch credit card merchants and can now accept MasterCard, Visa, American Express, JCB, and Discover.