any suggestions for banner ad network as a backfill after admob??
Give Appodeal a try. We will re-release our SDK with banner ads in just a few days. That should automatically address the issue with banner ads as we are network agnostic.
same, huge drop in admob and mobilecore. In mobilecore drop is around 40%. In admob there is a funny situation, everyday my impressions and clicks grow, but revenue almost stay the same 
Same here, Admob revenue dropped by about 40% too…