have you done this successfully? I cant get banner or anything to show with these test ids. i have the correct index. I have done backflips with admob. ive gone as far as watching videos that have my adding implementations to build.gradle and adding things to android.manifest.
my understanding is that showing test ads should be really easy. setup admob, add test IDs, add blueprint. All of my google play support fields are filled in correctly in project settings. i have checked and rechecked. my admob account is verified, connected to adsense and firebase. my app-ads,txt is setup. im not even trying to show live ads. i just wanna see a test ad pop up using test ids. any support here is appreciated!