What the hell?!?!
That the hell is wrong with the user interface?!?!!
You evil stupid bastards! You have cost me 300 dollars or more!

When I click "cancel all orders" I expect all orders to be cancelled!
When I click "buy", I expect order to be executed!

It took a minute or so until the system accepted that I demanded for the orders to be cancelled and then several eons until I was able to type in a simple MARKET ORDER for which there is NO BUTTON; but anyway, the price has run away by more than 15 dollars in the mean time, so I wish you many nightmares.

Seriously.

You must be kidding!

P.S. I already heard some wealthy people complaining about your buggy system and only now I understand what did they mean. Of course, they are no longer on bitfinex.