Problem at log in in wow

Hi, im new player, and i have some issue, dont know if it is about my wow or about server, i created new acc, and when i try to log in it says "Downloading update" and then "Patch required, Press the restart button below to exit World of Warcraft and download the patch" and when i click on 'restart' i get message saying "Failed to apply patch. Please try again later. If this problem persist you may need to reinstall or contact technical suport". Im sry if this is already posted, but as i mention im new here and never played before. Somebody knows what problem i have? Tnx :)