Ads are not displaying after publishing final application

Question

I had a game which I designed using libgdx.

It was displaying ads before publishing it on Google Play as I tested it by this code:

adView = new AdVie         


        

Answer 1

1. Check to make sure that your AdUnitID is correct
2. Sometimes there might be no ads for some weird reason.
3. If it is the first time(first app with AdMob), it might take some time before they start appearing. -> This Happened to me