Theres limits on certain bets on bovada. U have to wait till the bet is confirmed. Ive placed plenty of bets that have cancelled. Happened to me a few times where i didnt wait and it got cancelled, so now i wait till the bet is confirmed. Sometimes pending bets takes 5-10 minutes to confirm or cancelled. Bovada lines move constantly, thats why bets sometimes dont gl thru. Sometimes i keep retrying if it gets cancelled and eventually goes thru. Just my experience with bovada.