I found a way to fix the issue with the SimpleXMLElement code.
However, I am trying to find the documentation to organize events by date, from the most recent to the oldest.
Where can I find more information about the shortcode options?
Thank you very much @jhanbackjr seems to be an error with the access key as I am getting this error message:
Error! AWS.InvalidAccount
HTTP Status 400: Bad Request
Your AccessKey Id is not registered for Product Advertising API. Please use the AccessKey Id obtained after registering at https://affiliate-program.amazon.com/assoc_credentials/home.
I really appreciate your help