I implemented this framework into my flutter app that is available for both iOS and Android. It's been live for a bit over a week now, and for some reason, despite having many ad requests for iOS, none of them have been filled. I've had fewer requests for the Android version, because it has fewer Android users, but the fill rate for that version is around 75%, which makes sense. Do you have any ideas regarding what could be causing this?
I implemented this framework into my flutter app that is available for both iOS and Android. It's been live for a bit over a week now, and for some reason, despite having many ad requests for iOS, none of them have been filled. I've had fewer requests for the Android version, because it has fewer Android users, but the fill rate for that version is around 75%, which makes sense. Do you have any ideas regarding what could be causing this?