The amount of traffic we can send to your campaign is limited by a number of factors.
The first is the amount of traffic sent to us by our Publishers for the country that you are targeting and the second is the amount of other campaigns running.
If you are not receiving as much traffic as you would like, please see:
with regards to increasing your CPM bid in order to boost your position in the queue.
Or you can get a refund for the remaining traffic on the campaign.