As I am completing the graded exercises for the MOOC on the HPB collab platform, I can’t seem to be able to submit any answers with the
Submission function from the
It is the same for every week with every key, this message is printed when I try submitting:
The key you provided is invalid. Please double-check on the course's site. If the problem persists, contact the organisers of the course.
Is this the right place to contact for this problem?