It takes 2 hours for an ad to be running. After creating an ads, this one and the Keyword are being controlled by a software. After that, if it is necessary, a manually verification will be done.
The status of a campaign is always 'submitted', even if the ad has been rejected. To check if it is the case, you have to click on your campaign name and then on the ad group name. The page displayed is the 'Keyword performance' which show the status of each keyword (if a keyword has been rejected, you can see the reason of the reject by clicking of the status 'rejected')
If all the keyword are rejected, then it means that the ad is rejected. You can then change the ad by clicking on the tabs 'ads' and then on the ad title and change what is necessary
Hope this helps
pierre