Card Processing Downtime: June 1, 2011 2:00-5:00 AM PT
Square merchants will be unable to take credit card payments on Wednesday, June 1, 2011 between 2:00 and 5:00 AM (Pacific Time) as we take our API down for maintenance. Card processing functionality should return after 5:00 AM, and may be available earlier. We apologize in advance for the outage and will provide updates here when our downtime is complete.
UPDATE: 2:04 AM Maintenance has begun.
UPDATE: 2:44 AM Maintenance has been completed. Card processing is restored.