failed to load ad : 3

Question

I\'m setting an ad to my Android application using DoubleClick and can\'t manage to show the final ad, can someone help me?

When I test an ad by adding ".addTest

Answer 1

I had the same error in my app. I was launching the app in debug configuration. The problem was solved as soon as I run the release version of my app on the same device. In Android Studio just go to Build -> Generate Signed APK and choose the release configuration. Then install release .apk on your device. In debug configuration you can also check whether your test ads appears by adding AdRequest.Builder.addTestDevice("YOUR TEST DEVICE"). If it's ok with ads appearing, it means you just need release configuration.