When you upload new ads, they are submitted to a rigorous audit process to make sure they comply with our content standards.
Ad auditing for Facebook ads is performed by Facebook and usually takes less than an hour.
Ad auditing for banner ads is performed by network partners and takes 24 to 48 hours, depending on time of day they are submitted and if they are submitted over the weekend. However, auditing can frequently take less than 24 hours in our experience.