Facebook ads not showing

I created app recently. I added facebook banner and intertitial ads. But none of these showing in apk.

I put the ad placement ID in kodular and tried run apk. Still I could not verify the step:
“Integrate the audience NetworkSDK into your android app and start earning revenue”.

Another thing I did not publish my app to playstore.

Is this compulsory to publish app in play store to verify both steps shown in image to show ads?

Or there is bug in Kodular after any update. Please help me, if there anybody tried facebook ads recently.?

your app needs 100 downloads or more before you see any ads.

If you want to show ads from facebok.
Then you must publish your app in playstore.