On interstitial ad clicked
Triggered when a interstitial ad is clicked on
On interstitial ad exit app
Triggered after interstitial ad opened
On interstitial ad close
Triggered when a user returns to the app after viewing a interstitial ad
On interstitial ad opened
Triggered when a interstitial ad is overlaying the screen
On interstitial ad preloaded
Triggered when a interstitial ad is preloaded
On interstitial ad failed to preload
Triggered when a interstitial ad has failed to preload