from yesterday evening my active view ratio is free falling from 68% to 20%. I asked around and found [ads.google.com...] this issue is related to russia only. We do not have any russian traffic. Do other having this issue?
Impression and coverage is almost same. Coverage is almost 97% in April. Today it is 95% which is expected as it is start of the month. I have checked it with ad unit wise creative device and Geo all showing same issue.