We've submitted the Alexa skills App for 4 times now within last 2 months. The reason was about that we don't have account linking feature. However, we do have it through a 4 digits pin solution that we found online. We kept getting rejected 4 times for the same reason, and there was no where we can explain how it works. We've contacted Amazon support guys but had no reply at all. We've been working with Apple app store and Goole Play for the past 5 years. Working with Amazon Alexa store has been the worst experience so far. Please can someone here to help ?