How to renew trial license for Server and Datacenter

You can try out R4J - Requirements Management for Jira for up to 90 days without cost.
After the initial 30 days trial license, a new trial license can be requested by following the steps below.

Instructions

The following steps need to be performed by the technical contact that is assigned to the license.

For Data Center:

Login to my.atlassian.com
Locate the trial license that you want to extend and expand it
Click on New Trial License
Enter organization name and confirm Terms of Use
Click on Generate License
Copy the license key and update your license for the app in Jira

For Server:

In 2024, Atlassian is retiring their self-managed server offerings. Since February 2023, Server trial licenses can no longer be generated.

If you follow the steps from the Data Center license renewal with your Server trial license, you'll get the following error message:

The workaround would be to install a Data Center trial license for the application.

From R4J - Requirements Management for Jira Atlassian Marketplace Page
Click Try it free
Then, select Start free trial under Data Center
Enter organization name and confirm Terms of Use
Click on Generate License
Copy the license key and and update your license for the app in Jira