Hello Andrés,
I confirm you that Gloria Food is not integrated to Stuart. You can ask them to integrate us first (they will be able to help you better) or support you with this custom integration process that we unfortunately have no visibility about.
The URL of Productions isn’t meant to display content, but only to host the requests, such as the endpoint you are trying.
I well received your credentials. However, be warned that the token will expire in 30 days. To use an automated update, you can use the libraries we recommend or get in contact to Gloria Food to do so.
We are open to have a discussion with you and Gloria Food to help to move things forward.
Marta