My facebook audience network Status low performance

i try few day with facebook audience network (FAN banner) and i have a report, but is this normal performance ?
fill rate very low (getting low day by day), and CTR under 0.5%
i just setup banner ads without interstitial
anybody have same experience like that?

Do you use one app ID for many different apps?
Sometimes ecpm drops much when doing it.

cpm is not bad… I think he is more concerned about fill rate which can be improved by changing the placement to ‘maximize fill rate’, this will increase the fill rate but will decrease the cpm :slight_smile: