@Steffani1 I would assume that you would be penalized since Airbnb offers a bonus, usually 10% of the cost of the reservation, to guests whose reservations are cancelled. The monetary penalty to hosts is what covers that cost.
I don't know why you are leaving Airbnb, but I would suggest you discuss it with them. Here's how to contact Airbnb:
Thanks very much Clare, I really appreciate you passing on the contact information as I was getting very frustrated with not being able to contact them directly.
I'm not certain if my reason completely falls under 'extenuating circumstances' which is why I need to speak to somebody.