Google AdMob not showing Ads in Android App

Hello, I am pleased to find the solution to the trending problem android developers face while trying to show real ads using Google AdMob, after following the correct steps to add AdMob in ur android app yet the ads won’t show, instead you will see the picture below.

You can only see that in an Emulator, not a real device.

SOLUTION
1: Create a google developers account(Playstore Account)
2: Upload your app and wait for approval
3: when your app has been published, wait for 2hrs more then you will see real ads
Google’s new rule concerning AdMob is very strict to none play store account holders, you must have a google play store account.

NOTE: Ads shows only in an app in the Google play store
Cheers and Happy coding.