Hello,
Hope someone can help out with this as I cannot understand why I am having problems with this issue.
I have implemented both banner and interstitial ads in my one of my apps that I am shortly due to release and it seems my interstitial ads are failing to display in test mode. Instead, the onAdFailedToLoad is executing with an error code 3 passed in. I've tried both test ads and also attempted to test the actual final ad unit id to check whether there was an issue with the test ad unit id itself, yet in both cases have resulted in the same issue.
I've spent some considerable time debugging the app and have ensured the ads are fully compliant in that the banner ads contain a noticeable border surrounding actual clickable content and have also ensured the interstitial ads only display after four new clickable events are executed.
Any help would be greatly appreciated for solving this.
Richard