The feature to use Epic link doesn't apply to Team Managed project due to the restrictions from Atlassian, but by using the field Parent Issue key in AIO reports the epic links can be displayed for the linked issues.
Instructions
Navigate to AIO Reports → Custom Report → New Report
Add the fields Issue key, Issue type, and Parent Issue key to the report.
Run the report to get the list of issues and their Epic links
Ensure to have proper permission to create AIO Report.
You can customize the report by adding new fields.