Video URL on how to open a Support Case - https://communities.ca.com/videos/5898-demo-how-to-open-a-support-case
You can download the latest version of ARD by following the directions in this document: https://support.ca.com/us/knowledge-base-articles.TEC1354547.html.
To contact support, go to https://www.ca.com/us/services-support/ca-support/contact-support.html.