Dear Chris,
Thank you for the quick reply.
I am afraid the link to contact Coursera does not work. As course organizer I would like to ask you to contact Coursera on this issue. In my view, and being a technical issue, this is something the organizers should work on and provide a solution to the participants.
Like other colleagues my deadline is sunday evening so I am guessing I will not have feedback from Coursera up to that time.
Looking forward your support on this matter.
Best regards.