Android Alexa authorization failed.

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I finished my demo with reference to AlexaAndroid. I have successfully logged in during use, but I was not authorized to use Alexa license. I gave the following feedback. What do I need to do? There is no explanation in the documentation. Please help me.

See the picture：

https://upload-images.jianshu.io/upload_images/4233740-d77aa340647fe743.jpg?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240

https://upload-images.jianshu.io/upload_images/4233740-5a77e98bf8d8d7d1.jpg?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240