You can re-open a closed sprint only when there is no other sprint active in the project. In order to re-open the closed sprints, please refer to below steps:-
- Click on the ‘Reports’ from the left panel.
- Select ‘Sprint Report’ from the list.
- By default it will show the last viewed project with Scrum Methodology and last closed sprint. Select the project and the sprint you would like to re-open.
- Click on Submit.
- Click on and click on ‘Re-open’.