If resubmitting is not enabled, your instructor can manually delete a previous submission to allow you to submit another file or change the assignment's settings from here, then follow the steps below:
- Go to www.turnitin.com.
- Click on the "Log In" button located at the top right corner & enter your user name & password.
- Click on the name of the class
- Press the "resubmit" button if the instructor allows resubmissions

5. A pop up message will appear, click OK to resubmit your paper

6. Follow the same steps here.