Have anyone encountered a problem when you get almost twice less traffic than PopAds is showing you that you got?
Hi rafael3000 
I think it would not solve your problem but we have the nearly same issue with PopCash + 0,00 converting traffic the last 3 days. Would be interesting if the traffic quality droped for you, too ?
Hello rafael3000, you must always keep in mind that Pop traffic can show discrepancy. Generally, there are some factors that may affect the counting:
1. Internet surfer's/user connection speed.
2. How the publisher setup their codes.
3. Network issues
4. Pop killer/blocker for popunders.
However, popunder's count discrepancy is usually about 15%-35% (due to pop blockers)...
Hope it helps 
Up to 10% discrepancy is normal between your system and a another system. If its more than that, there's something wrong.
What is equally important is that both parties (traffic buyer and seller) agree upfront which system will be leading for invoicing purposes.