The companies said they were offering two $50 bonus sports bets to customers, the first of which was added to accounts Wednesday. The apps remained down until late Wednesday when customers received an email from William Hill and Caesars Sportsbook informing them their accounts were available. The William Hill and Caesars Sportsbook mobile sports betting apps were back in working order Wednesday night after crashing during the Super Bowl. Kansas City Chiefs' Patrick Mahomes plays during the NFL Super Bowl 57 football game against the Philadelphia Eagles, Sunday, Feb.