advertising – Popup ad networks that show correct impressions

I have a website with 10K visitors daily, and I have tried every pop up network I can. All show wrong impressions count.

Tried Propellerads, ClickAdu, Admaven,, adcash, etc. I configured to show one ad every 8 seconds.the average time spent by an user is 1 minute and 30 seconds.. So the least amount of impressions should be 60000 impressions per day, with counting only one min for duration.

But all networks show incorrect impressions.

Propellerads show the maximum impressions. Others are very poor., but Am siure users see those ads. Anyone can suggest a good alternative??

My website is a download Website, co can’t try adsense and related networks.