Make sure your campaigns are at level 1 frequency. I remember when I first installed it I choose the other option to prioritise banners in a campaign, but no banners showed up. If I had all my campaigns at a level 1 frequency it worked (and I don't mean individual banner frequency, I mean campaign frequency).
__________________ Are you a webhost or designer? - Earn passive income: We are looking for partnerships -> Click here BetterEdit.com - English editing and proofreading