Sitecore Discover (formerly Reflektion) is planning to end the support for the existing UAT environment cec.uat.rfksrv.com on August 23, 2023.
Upon deprecation, the Customer Engagement Console (CEC) UAT cec.uat.rfksrv.com and all UAT API endpoints will not be accessible.
If you have any questions, reach out to Sitecore Support.