Comment on SEO AdSense WordPress Theme by SEO Dave.
Most times AdSense doesn’t work it’s because the user has inadvertently copy pasted additional characters (tabs or spaces) which breaks the code.
Check before and after for spaces, should only be:
Assuming you’ve ticked “AdSense ON”.
Next thing is check the domain isn’t banned, search Google for AdSense Banned and use the sites chat check if your domain is banned.
Still not working, what’s the URL?
BTW when it works it’s instant, so no need to wait unless your AdSense account is new and not approved yet. Apparently if you haven’t verified your AdSense account the ads won’t work.