Most of my bets are paid within a couple of minutes.  My parlay was finally paid, but after ~25 hours.  I think it is just the parlays that are slow to pay (I placed a bunch of single bets and in-game bets two days ago that were fine).  Anyways, I got my coins so they aren't a scam...it is a bit disappointing though waiting so long.

Also, the payout was, as always, instant.  It was just grading the bet that took so long.