Why my ad unit still says pending activation when ad is shown in the app?

We activate ad units the next day after we start seeing ad impressions coming from them in our logs. If ad unit is not active yet then we are not seeing impressions coming from the app. If the app with AdDuplex SDK is already published in the Store, please make sure that you have set the AppKey and AdUnitId (older versions - AppId)  properties on the AdDuplex ad control correctly. Also make sure that the ad control is fully visible and nothing is covering it (even if transparent). For more detailed information on these and other causes, please, check this source: Adding ad control into your app