I was migrating my code from 2016's CS50 function syntax to 2017's updated function syntax (e.g. GetFloat() -> get_float()). When I submitted my first problem set, it said that it had been submitted "after the deadline of January 1st at 5:00am."
However, every other page shows the official course deadline to be 31st December 2017.
The edX customer support do not seem to offer any technical explanation, the implications of the Submit warning, or mention anything of the Submit page being updated.
Does the deadline appear incorrectly for anyone else? Is there any way of knowing whether it is being updated, or if my account is stuck on the old version of the page?