Thanks for reporting the issue. We have top men working on it right now. Top. Men.

We're still getting lots of successful transactions, so the problem isn't universal. Still, it appears to be persistent per user, as far as I can tell. I'll keep you posted.

Could you guys try again? Our main dev found no problems on our end, and the problem seems to be on our third-party transaction service. I would like to find out if this is intermittent, or persistent.

Yep, HopeAtLast sent me a PM about this as well. Thanks for the heads-up.

Looks like a random glitch on a third party's end - we'll investigate this with them in more detail on Monday.