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. $ X0 C4 b6 F. B; ~6 l' \9 f
But here is the list of main reasons which can cause a high discrepancy: # t2 r8 M- g% c! G1 A$ [- there may be a number of zones causing the discrepancy, so we recommend to you to check by zones and exclude such if any " x/ y6 w! E' r" C" I- the more redirects are in the url the more chances it will cause the discrepancy - u8 v0 X/ `0 Z+ q! P* y6 ]- 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. - m; A: D9 V- k( p3 I( W4 ] / o) N1 k* N2 \4 ]为什么我感觉官方的解释很敷衍