My winnings were finally credited manually about 30 hours after the game ended

It is good to see your issue is already fixed although you needed to wait for 30 hours after the game ended. Hopefully there will be no similar issues in the future, as it might make players feel bad and may leave coinroyale to find other bookies. Even if there will be similar issues, hopefully they can fix it as soon as possible so players do not need to wait for too long time.