Unfortunately, we are not authorized to provide guidance on how to complete the Tax Identity Interview or advice what's missing. For further assistance we suggest reviewing the tax interview guides:
Royalty Tax Identity Interview Guide - https://developer.amazon.com/tax-interview/help?nodeId=201447640&locale=en_US
Service Tax Identity Interview Guide - https://developer.amazon.com/tax-interview/help?nodeId=201588330&locale=en_US
If you are still uncertain about how to proceed, please consult a tax professional.
Here is Set Up Tax Forms for Your Account document.
