When you create an ad, we review it to make sure it follows our
If your Pin goes against our advertising guidelines, we'll send you a notification in your Ads Manager. We'll also send an email from ad-reviews [at] account.pinterest.com to the email address associated with your Pinterest account with more information about why the Pin was disapproved.
If you edit targeting or your ad description after submitting an ad for ad review, your ad will be re-submitted for review. This may take an additional 24 hours.