About a month ago, one Google AdWords advertiser reported a bug with upgrading to enhanced campaigns in the Google AdWords Help forum. He said that as soon as he upgraded, all of his ads stop showing up.
In short, all his ads have stopped showing up and not because of budget or quality issues - something was wrong.
A couple weeks later, a Google AdWords representative came in to explain this was related to upgrading to enhanced campaigns but specific to video ads. Zee from Google wrote:
All I can share with you at the moment is this: Our team has identified a technical issue which is causing a problem with AdWords for video.
I do not believe it was limited to video ads from what I've read in the thread.
Then on August 1st, Zee came back in and explained why the issue happened:
This issue is related to a backend change to our ad serving system, which we're making so that in the future, we can bring you additional targeting features. I don't have any time when it will be fixed, but our engineers are working on finding a fast fix.
Last night, Zee came back in and said the issue is now resolved. But is it?
Many of those who complained about the issue said it is not resolved. One advertiser wrote hours after Zee's message, "I still have 0 views on my 57 SEARCH keywords."
Do you have this issue? How can this be going on for a month!
Forum discussion at Google AdWords Help.