As soon as you launch an ad in Ads Manager, the ad will appear on your ads dashboard and will be marked by a blue "Pending" tag.
The reason for the Pending status is that every ad must be reviewed by Facebook before it can officially launch. (Once the ad has been approved and has launched, the Pending tag will change to a green "Live" tag.)
Many ads will pass Facebook's automated review process and go live within about 30 minutes. However, some ads may require additional review by Facebook moderators, which according to Facebook's policy should take up to 24 hours. In reality, this timeframe may be shorter or longer depending on demand.
Please be aware that PSAI has no control over Facebook review. This process is required and controlled by Facebook. However, we would be happy to assist with checking an ad's status if the review process is taking longer than it should.
If your ad is showing paused for more than 24 hours, please contact us. Fill out a Support ticket at this link, or open the Help widget in the bottom right corner of your screen.