I created a Contract campaign with some limitations, and it's just not showing the add, even though the Zone shows 100% possibility.
I'm in Mexico, and I'm using a Mac, and the ad is not showing. I've tried changing the cap to 10 views per session. If I remove the Deliver Limitations, the ad does show. I think it's the Operating System limitation that's killing it. If I remove the OS, but leave country, it works.
I have another add that is remnant in another zone, with different limitations, and that one is working fine.