We ran out of resource credits yesterday due to a "series of unfortunate events" and that caused our ability to deliver Steem, SBD, delegations, and Steem account creations to be unreliable at best during that time. We added a warning on our site about it so that users would be notified that while we could accept Steem buys, our delivery of Steem-related outputs would be delayed until Monday.
But I'm happy to report that diligent efforts yesterday and today by our dev team enabled us to cut down that time considerably: we've successfully re-processed the failed output transactions at this point in time and we're back to full normal operation.
As a side note: A shout-out to 
