We are experiencing persistent problems with our credit card payment processor, a third-party.
If you encounter a problem with credit card payment, don't panic. Please submit a change request and we'll respond as soon as possible. You will still be asked to pay the rate in effect at the time of your registration, not the time of your payment.
The change request form is available via the My Registration page: click the link for your invoice, and you'll see links near the bottom of the page.
Remember, we're volunteers, so PyCon problems usually aren't handled during our day jobs. Please be patient.