I use automatically inserted adsense on two of my sites. I inserted the code as described by google, but no ads appeared. I placed the code into the html/header.php.
What goes wrong?
Inserting the AdSense code doesn't guarantee that ads will show (although I think becoming less common now that ads are as much user as well as content targetted) but what I would do is to double check that it has been added correctly using Firefox.
Firstly, browse to a page where you have added the AdSense code, right-click on the page and go to "View Page Source". In the source code, look at the AdSense code and check that nothing is highlighted in RED which indicates a mark-up error.
Do not know what else I can do.
If this is a new site it may just be a case of waiting for the crawl - make sure the sitemap is submitted in your Webmaster Tools account - and as well as seeing indexing stats there you can also Google search:
...to see an approximate number of indexed pages. I'm afraid I'm not familiar with Auto Ads so I'm not sure how it determines where to insert ads in the page - it may be that there is nowhere suitable for example so I'll have a look into that further...
Thanks for your time.