Bangalore University — To get Chance to clear Backlog

Hello
I'm 2019 BCA passed out student of Bangalore University, i have Backlog in 5th semester, Because of corona i couldn't go to Bangalore, so i couldn't write the exam. I need just one chance to clear this Backlog. But my college management says that time is already over, you can't write exam now, If they approve me to pay the exam fee i can write the exam. my registration number is 16JQSB7019. As i have seen many people who are 2010 batch or earlier than that, they are able to write the exams but why not 16 batch. Please Help me out. It can save my career.
Thank you