title: Error: firebase.admob() InterstitialAd.show() The requested InterstitialAd has not loaded and could not be shown
body: <p>I'm using react-native-firebase / admob to use Adbmod in react native, and when I try to use Interstitial Ads on my first click it opens the ad, but from then on it returns this error:</p>
  <pre><code>Error: firebase.admob () InterstitialAd.show () The requested InterstitialAd has not loaded and could not be shown.
  </code></pre>
  <p>The Code is the same as the documentation and can be found here:</p>
  <p><a href="https://rnfirebase.io/admob/displaying-ads#banner-ads" rel="nofollow noreferrer">https://rnfirebase.io/admob/displaying-ads#banner-ads</a></p>