My account was suspend after i order 3 steam gift cards

Well, ALL my points i won rating photos, quest, videos, etc… Nothing ilegal so far ( wich the site claims). After a while i won pts enough for a giveway so i play and surprisingly i win, so i made my order and after 5 hours i get a message saying ‘‘account suspend’’… i just want my account to be unsuspend because all of this looks like a waste of time (sorry for my bad english, im brazilian)