There are confirmed reports at Google AdWords Help forums of a bug with the Google AdWords Ad Preview and Diagnosis tools.
Some are reporting that when testing the localization within the tool, the tool is showing that the ads are not running, when they are indeed running.
Dan S, an AdWords advertiser wrote:
Google’s Kathleen confirmed the issue and said the Google team is looking into it. Kathleen wrote:
Forum discussion at Google AdWords Help.
