What to do if ad is unapproved?
Ads are disapproved because they don’t comply with one or more of the Authorized Buyers policies for advertising on the Google network. Authorized Buyers reserves the right to disapprove ads that breach any of these policies and to suspend entire accounts for certain violations.
If any of your ads are disapproved, it, unfortunately, means that the ad isn’t able to run at the moment. To get your ad up and running, find out which ad was disapproved and then edit it so that it meets google’s advertising policies.
Go to this article for understand how to fix the issue and resubmit your ad for approval.