Yo,
It has been acting wonky for me too. Sometimes on the parlays, it will show $0 as your potential win on your bet until you 'accept'. Then once the bets are active, the actual 'potential win' totals are visible on your 'pending bets'. It's kind of a risk, cuz you can't view your payouts until you accept...but they've always been there once I made the bet. At first I thought it was a sign NOT to parlay, but I'm too greedy ;)