I was testing my android app using monkey and there might have been thousands of successive ad-requests while the test was on. The test went fine.
Now, I no more get any fill for test ads.
Logcat reads:
No fill from ad sever.
Failed to load ad: 3
Neither my app nor the ad id is suspended. Ads are working good on all non-test devices (this is not a duplicate question).
I tried changing the android id of my test device and ads appeared. But as soon as I added the (hash of) new device id to test devices, the problem returned.
So, I concluded that test ads have been somehow disabled for my app. How do I enable the test ads again and how do I prevent this from happening in future while stress testing with monkey.
I have also sent an email to admob support regarding the issue and await their response.
Any information or help will be highly appreciated.
EDIT
It was a problem at admob's end and they have fixed it now.
I have the same issue, I didn't run any stress test just usual development/debugging. It looks like AdMob problem, lets wait day or two... Hopefully someone from AdMob will fix it.