Originally Posted by nextri

Stats get recalculated a day after, because some of our campaigns for certain geos are cpa campaigns where we pay publishers based on how the traffic converts at third party programs. We spend a lot of time finding programs and campaigns that convert foreign traffic and use such programs as a base to price the traffic. Then we sell to advertisers with this price as a minimum. Stats from such programs can be on 24h delay, which means the last day could show a lower amount at first, but end up a bit higher if you wait a day to check your stats.
By using this technique we are able to let publishers make the most for their traffic, and also be able to sell a higher percentage of the available traffic.
But the disadvantage is that stats can't be 100% live.