Hello,
Thank you for the information.
The Ad Inspector is responsible for displaying that you haven't correctly configured the SDK. Kindly note that the SDK just requests an ad to the ad server (E.g: AdMob), and I'm afraid that it doesn't have any control on fill rate / match rate of your app. This is more of an ad serving issue/ fill rate concern which is out of scope to our team. That said, we would recommend raising this to our Product Support team (
https://support.google.com/admob/thread/new?hl=en) instead as they are better equipped in handling these concerns. You may also reach out to Meta's and AppLovin's Support team for additional information.