I had an answer to my report that their website didn't accepted my CC. The answer might explain why so many shard where left at the end of the event.
"Hello,
Thanks for contacting Kinkoid Customer Support!
We experienced an issue with our payment processor over the weekend.
It has now been fixed, and the issue should not happen anymore.
Please try again, and let us know if you need further assistance regarding this matter.
Best Regards,
Kinkoid Team"