I premise that my project has surpassed the 5k impressions (over 10k in the last 30 days) but currently the revenue is decreasing and for the last 14 days, it stands as such :
Impressions : 4.6k
eCPM : 2.55$
Fill Rate : 98.1%
Currently I show ads in 2 cases : To receive an extra HP/double gems, or for a 1 time use of a spaceship you didn’t unlock. The first one was video ads and the latter was rewaded, but recently I changed both to rewarded.
Any suggestions to improve? So far the revenue seems to come only from “super spike of daily eCPM” from United States in certain days (which see the most amount of ads aswell).