We are continuing to work on a fix for this issue.
Posted 25 days ago. May 24, 2019 - 17:52 CEST
Update
We have identified an intermediate workaround while Recurly and our card processor are still analysing the root cause. Customers who have valid cards rejected should contact support@kraken.io for a resolution.
Posted 8 months ago. Oct 26, 2018 - 20:48 CEST
Identified
We can reproduce the issue and have traced it to the payment gateway service. We are working with their support to locate the root cause.
Posted 8 months ago. Oct 26, 2018 - 19:00 CEST
Investigating
Some customers have reported that perfectly valid credit cards are being rejected. This matter has been escalated to our payment billing provider, @recurly, who admit that the problem is on their end and are working on a solution.