I've got to the final step (step seven), and get the error message "Customer is not authorized to enable this skill". I'm sure it's from the "user authorized code" I'm supposed to send to Amazon. What is that supposed to be? Not the code returned from Amazon I know, as that failed. Not the user ID...is it supposed to be a code that Amazon uses to MY OAuth server?? This part is NOT explained very well at all in the documentation. Searching for "Customer is not authorized to enable this skill" returns exactly one result on google, so happy to make this TWO results. Has anyone else encountered this issue??