We are working on the app and we have users wordwide. and i know Amazon ADs available only for Few countries as per this link. We are developing from India. I have developed a sample android app and it just only have one activity and tried to show that ad in Sample app but it was throwing No_Fill error. Then i send that app to my frnd who is in USA. But for him also it is not showing. Please help me why i am getting this problem.