We recommend that publishers to use standard IAB ad sizes: 125x125, 300x250, 160x600, and 728x90; however, you are free to create any size ad you wish to sell.
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.
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