Step2. I created an order and set the ads targeting (ad Units) to include my ad unit.
Step3.Add Creatives, I selected the network to Custom Event, and then fill the necessary parameters of the third party.
Step4. I copied the mobile application tag of ad-unit to my android project, and then write custom event class.
Finally, I run my project and it always shows the log at below:
I/Ads(5797): No fill from ad server.
W/Ads(5797): Failed to load ad: 3
Does anyone have any idea what could be wrong ? Any information you need just let me know.
Many thanks!!