I'm trying to integrate firebase admob in my app with react native, everything works with testID of a Banner ('ca-app-pub-3940256099942544/2934735716'), and the Banner is displayed correctly.
But when I'm using my bannerID it shows me this warning ('the ad request was successful but no ad was returned due to lack of ad inventory') and no ad is displayed.
So it's not somenthing about my code, but about my AdMob account and I can't solve it.
Here you can find info about my AdMod account and about my React Native code.