Hello,

You can go to university and tell them the problem, they will guide how to proceed or you can submit application form for the same.

Good luck!

If you missed to submit the income certificate at the time of verification, then you can do only one thing that is contact the university that where you can submit this if it it mandatory for the verification. May be they will tell you to visit there and make your income certificate verified their only. As only college can help you and give you a solution for this. All the best have a great future ahead.