I have a WP blog site I am trying to monetize with amazon in some places.
I installed your widget that asks for account security credentials.
CodeShop Amazon Affiliate plugin.
I generated a priv/pub code in the AWS system and neither work.
do the role and user names have to reflect my wp id?

First you need to confirm your products advertising API credentials are working okay then you can add / advertise products with your Wordpress regular posts / pages. We have replied about how to retrieve your credentials properly for products advertising API here. When you put your credentials into CodeShop -> Settings page and after click on save button you will see ''Test Settings' button to test / check your credentials working okay or not, if you see success message after click on "Test Settings" button then you are ready to add / advertise amazon products with your Wordpress regular posts / pages.