Originally Posted by NoWhErE

I can't comment on their internal process because I don't work for Adsterra. But, with traffic, data and sample size are important.

Maybe on a small sample size your traffic seemed OK but with more data, it turned out to be shit. Try media buying a bit and you'll quickly understand what I mean.

Note: Final quality checks on traffic quality made by a different person/department before first payouts are VERY standard for most networks.