I am following the steps associated with https://developer.amazon.com/blogs/post/TxQN2C04S97C0J/how-to-set-up-amazon-api-gateway-as-a-proxy-to-debug-account-linking but when I try to link my account I am getting a json response of {"message":"Forbidden"}in the browser. Is there something I might be lost that could cause this?
Source: amazon.com