Q. What happens when my license expires?
A. After a few days the software will be blocked and you won’t be able to access the Jenkins instance until you renew the license.
Q. I am using a paid license which expired. How do I get a new license?
A. You can open a standard support ticket with your instance id asking for a new license. CloudBees team will reach out to you to refine the details. You are encouraged to attach your last auto-generated support bundle to the ticket.
Q. I am using a trial license which expired. How do I get a paid license?
A. If you wish to not use CloudBees Jenkins Enterprise and you would like to remove cloudbees enterprise features look under the uninstallation section for steps to go back to Jenkins OSS.
You can refer to this page for more information.