If resubmissions have been enabled or an instructor has deleted your first submission, resubmitting a paper is handled in an identical manner as a first-time submission.
You are allowed three resubmission attempts where the Similarity Report will generate immediately. After three attempts, you'll have to wait 24 hours before a new Similarity Report can be generated.
Resubmission attempts are shared between you and your instructor. If they attempt to resubmit on your behalf one of your attempts will be used.