When a fundraising project reaches its end date, all recurring donations are automatically stopped and the donors responsible for them notified. Supporters can, however, still make one-off donations to a finished project.
To reopen a finished project or extend the end date of an active project, login to your fundraiser account and view your public project page as your donors would see it. Click on the icon below DAYS TO GO, then set a new end date in the "Deadline" field and click "Save".