Hi Carlos (when the page first loaded I thought the first name was Martin, my apologies),
You should expect to see CA App Experience Analytics in your product download list, we would suggest to choose the latest release 16.4.
If you do not see it in your download list, it would make sense to review with your CA account team to be sure it is part of your entitlement.
You can sign-up for a Saas trial if it is something you haven't yet done and want to familiarise yourself with the product.
https://www.ca.com/us/products/ca-app-experience-analytics.html
Many thanks,
David