Why can't my student resubmit their assignment?

• In the sample below, the instructor has:
  • Set an open date, when the assignment will be available to students
  • To the left of number 1, after the open date, set a matching close and due until dates
  • To the left of number 2, after the close/due until dates, set a resubmission number allowed and date/time

• What can students do?
  • Students can submit and resubmit assignments until the close date and due until date/time
  • After the close date/due until date, students who have already submitted an assignment, can resubmit' assignments.

• Why can't some students submit after the close date/due until date, but before the resubmission date?
  • The resubmission date only allows students who already submitted assignments, to resubmit assignments.
  • Students who never submitted the assignment before the due date/due until date, will not be able to submit the assignment after the due date/due until date. These students will have to email their assignment to their instructor.