Maybe not all of them. Look at this reply by @Text to my post:
Apparently, it wasn't that obvious that it was a typo, and I think that people who placed their bets on the "$12,001 - $21,500" range at least deserve an email notifying that the range was changed.
Forgive me if I did not think it was a mistake but I thought it was an advantage to be safer in placing bets. So what about those who made bets on that option? Of course you just return it to their account balance. They should really be notified to know that it has been removed and repaired. What if they can't visit this site and still think they still have a bet. Maybe it's time for you to pay attention to giving the notification just like the completed bets to see the result immediately.