What is it you have tried? It sounds like the user ([IIS APPPOOL\AmazonWorld]) does not have permission to access the folder and/or report on your SSRS server. Have you given them permissions to access SSRS in the Web Portal, or added them to a AD group that does have permissions?
Thom~
Excuse my typos and sometimes awful grammar. My fingers work faster than my brain does.
Larnu.uk