Admob ad will not load. Error 2. It worked before but suddenly stopped

Question

Here is the entire class that I am trying to load a banner ad into (createAd() method does the work)

public class HomeActivity extends Activity {

    privat         


        

Answer 1

I had the same issue of the ad not appearing on the physical test device screen.

I switched off my wifi and started using 3g mobile data and then my ads started appearing on the physical test devices.

I also have a difference in dependecies:

com.google.android.gms:play-services-ads:9.2.0

instead of 11.6.2