The ad was successfully shown to completion.

You are trying to show a full-screen ad before the ad has fully loaded. You might have failed to properly fetch the ad, or the ad might have expired.

You are trying to show a full-screen ad while another full-screen ad is already playing.

An unspecified internal error occurred. Try showing the ad again.

The ad view of the user has been interrupted. The user might have closed the ad view or left the experience, and should not receive a reward.