I cannot seem to log in to https://x.cs50.net/2014/psets/0/ to submit my pset. I submited the link of the project in Scratch's library in CS50x 2015's studio but when I try to log in to edX, it says "Email or password is incorrect." I am sure there isn't a mistake. Why can't I log in?
The 2014 edX CS50x course finished on 31 December 2014. That link is for the 2014 course.
Be sure you are following the 2015 course. Here's the pset0 for 2015:
And the submit link shown there is: