i am using admob from one year and every month i am updating my apps to newer version but from past 2 weeks ads not showing in most of the devices, like only 10 devices showing ads out of 100 devices(only for first time) and i tested like
testing in emulator with testing id and my admob id both are working fine,
i tested using VPN with some other countries ips ads working with every devices ( but for example some particular countries like indian ip not showing, here is the main issues)
and when deply to app store 1k impression per 10k page views and im pretty sure im not violating any polices
and error code admob Ad failed to load : 3
implementation 'com.google.android.gms:play-services-ads:17.1.2'
classpath 'com.android.tools.build:gradle:3.2.1' classpath 'com.google.gms:google-services:4.2.0'
i dont know whats happing this type of error from google server errors or my apps?? any help