We have carefully analyzed your request and would like to say that there might be numerous reasons why you see fewer impressions than we send you. u' @' Y6 b- f
But here is the list of main reasons which can cause a high discrepancy: 6 @# H6 ?. n! l6 K5 P- there may be a number of zones causing the discrepancy, so we recommend to you to check by zones and exclude such if any 2 r6 s) C' l6 p# [- the more redirects are in the url the more chances it will cause the discrepancy 6 y1 O( V0 t9 [- ^4 r0 P' [% g- if you use complex targeting, your tracker might do not recognize some of (opposite to our data), so it might cause the discrepancy too. Consider running a small test selecting just a GEO or GEO+platfom and check how it performs discrepancy wise.4 J2 R6 w8 S0 ?* I
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为什么我感觉官方的解释很敷衍