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Hi Oscar, Welcome to the dev forums and thanks for posting. There can be several issues here: The most common issue is the missing tax information, normally applicable to newly created dev accounts, where developer didn't have a chance to complete that info. Without it, all submitted apps will be disabled for ads. In your case you say that you have filled the tax information, and if it's been a few days since you completed that and it got approved, this point does not apply to you. The ads in your app could have been disabled due to COPPA violation: if you are targeting your app to users below age of 13 and because ads cannot be displayed for those users, ads could have been disabled. In that case ads will not appear even in test mode. To solve that, either select 'No' for the question 'Is your app directed primarily at kids under age 13?' under the 'Content Rating' tab in the application submission process if your app is not directed at kids, or remove mobile ads if kids below 13 are your audience. Mobile ads will be served only to users in the U.S., U.K., Germany, France, Spain, Italy and Japan. Your app itself will still function properly in any geographic region, but ads will be displayed only in the countries mentioned above. To solve this, you may implement some logic in onAdFailedToLoad() of your AdListener that will load an ad from an alternative network: https://developer.amazon.com/public/apis/earn/mobile-ads/docs/with-other-sdks This applies only to ads in live mode (you should still be able to see ads in test mode in any country, assuming there is no COPPA violation) A NO_FILL error can occur even with test ads enabled if the app is trying to load an auto-sized ad in a container whose dimensions are WRAP_CONTENT x WRAP_CONTENT. This will cause an Auto Ad Size failure and result in no ads being returned. Generally, if this is a screen-width ad then our recommendation for this case would be to change the AdLayout's layout params dimensions to be MATCH_PARENT x WRAP_CONTENT. Auto Ad Size should not be used if a specific ad size is required. Instructions and guidelines for ad sizes can be found here: https://developer.amazon.com/public/apis/earn/mobile-ads/android/docs/concepts#Ad%20Sizes. If none of these applies, and you still experience issues or have any questions, please use the Contact Us link in your Distribution Portal account: https://developer.amazon.com/help/contact-us.html so we can investigate it further. Thanks, Levon

Hi if you want to know what happen this are the results, after waiting one week there was no ads, but after look one moth after I see that the ads are working of course the first week that I was waiting for the ads work well never work so I'm not sure how much time I had to wait but in the end work. i was a little bit sad because make this work in the framework of cocos2d-x takes me time. Results: first week no ads, after one month ads work. Exact time ? I have no idea . Where I'm from? Colombia maybe it was that. Thanks you amazon developer team.