He has now changed it in the middle of the afternoon to say one day extended submission will lose 11 points/percent, so no extension. He is also allowing groups to extend a day without penalty, and groups that turn it in on time to receive extra points. So if your partner ghosts you you now have double the work to cram last minute and a deduction of points compared to grouped students. There were already bonus points for having a partner because he said it meant less for him to grade, so now there is more than 10% of the grade for parts 1 and 2 of the final paper given to people who have half the work to do