Some ads are setup in a rotation with other ads. This means that your ad shares a space with one or more ads from other advertisers. You will still get the impressions that were estimated for the space when you purchased it, but you will not see your ad on every visit or page refresh.
We tend to answer most support tickets during normal business hours: Monday to Friday, 9:00 am to 6:00 pm (EST). However, we're constantly monitoring tickets, and we'll address urgent issues on nights and weekends, too.Open a Ticket