Facebook Audience SDK

I am trying to display Banner Ads in any of my android Apps the last couple of weeks.

I do get the Test-Banner if I add my device as testdevice. I do get Interstitial Ads

But I do not get any Banner. Logcat gives me "I/Facebook Error﹕ frequent load" on any of my devices (5 tested), also tested deifferent advertiser ids from facebook.

Does anybody else have this issues?

EDIT: After installing the facebook app on any of these test devices I do get Banner Ads delivered. Why do they only deliver ads to users with the facebook ad installed?