Header ad not displaying

Sorry, this one must have slipped through the cracks. It looks like you have the Max Ad Count field on your Zone set to 0. The Max Ad Count field determines how many ads are allowed to appear within the Zone at a time. Setting this field to 0 would mean allow 0 ads in the Zone (which would effectively disable the Zone). To fix, increase the value in the Max Ad Count field to at least 1 or else clear the value out of the field (which would allow any number of ads).

We should probably have a warning if this field gets set to 0 (or else disallow setting it to 0) as what happens is kind of confusing and not probably what the user intends. I'll see if I can get it bumped up the list. Sorry for the trouble and the delayed response.