it takes two minutes to cancel your orders, because "market sell" always fills in as sone sort of a limit order, then when you actually place a limit order it goes unfilled forever, then you cancel it and that is okay.

BUT THEN, suddenly a minute later you find your position filled by that said sell order which was "successfully cancelled"

go duck yourselves, amateurs.

May I remind you that I left some 3-6k USD in fees to your site?