Your situation ...
As a rule, it is impossible to pass the work after the deadline. These are the general rules for all course participants. However, if you are sure that the problem is caused by an error in the task deadline settings or a similar reason, you can clarify this question on the forum inside the course.
All questions and feedback about the content of the course, messages about typos and problems found in the tests, evaluation features, deadlines and rules for performing test work should be sent to the course team. Then you can do the following:
Please be sure to specify:
The more fully you describe the difficulty, the faster you will get help.