See if your University has a page explaining about their RTW and how to proceed (here's one from University of Guelph: https://www.uoguelph.ca/uaic/quickfacts-rtw).

Not doing well in the past does not take away from doing well in the future. There's always time and possibility of turning things around. I withdrew with a 1.8 GPA and decided to get my degree and got it up to a respectable 3.2 by the time I graduated (got 4.0 in all my major courses). Employers will not care what your grades and difficulties were, just that you graduated.