Disadvantaged for a mistake that the university made.

I don’t get it. How does this “promote fairness across all applicants”? Essentially for the course I’m applying to I am required to fill in this extra questionnaire. This university miswrote the deadline and set it on the applicant portal page as the same day it was released. Meaning we had less than a day to complete it. I checked my emails morning and night however the email was sent at 1pm approx. So when I had read it near midnight I had a near heart attack and rushed through the entire form in order to submit it before the deadline. This questionnaire is suppose to rank applicants. I then contacted the uni to ask to potentially reattempt the questionnaire (it’s not timed, applicants can save their progress and so on) but they said they wouldn’t allow me to reattempt it in order to “promote fairness across all applicants”. I also called them and was basically talked down to saying that I should’ve read the email which had said the deadline was the X of October. However other universities had also previously made mistakes with their deadlines in which the email was wrong and the applicant page was right and vice versa. So how am I supposed to assume that the deadline was the X of October?? This course is extremely competitive and I fear that I may now make the bottom percentage of applicants. They added this as an extenuating circumstance to my report but I am unsure how seriously they will take this seeing how I have been treated. Should I withdraw?

I worked so hard to just be considered to this course and now I’m at a disadvantage for something that is not “my fault”. I don’t want to point fingers but I think these kind of mistakes should be addressed properly.