I'm trying to develop a mobile app with the hope of using the Amazon Product Advertising API through amazon associates, but I don't think i understand how this works. My app is currently a work in progress, and I have the API as well as the public and secret access keys from AWS. How do i become an amazon associate and proceed through the app URL screen to use the API when my app isn't technically 'released' on the app store? The amazon API is going to be a significant part of my app and I can't submit the app until I can get the API working. I'm just not sure how to continue, or if there is a way to retrieve this info that i didn't know about.