I have searched but not found existing threads on this topic. If I use other combinations of "google_ad_client" and "google_ad_slot", ads display on my site. To me this helps to rule out issues with my hosting company. But when I use "google_ad_client" and "google_ad_slot" from my account, nothing shows. I have not entered my billing PIN, but when I login the adsense site tells me that I do not need this for my ads to display. Any thoughts?