Hello Rahul

hope you are doing fine and great . As per your query, I would like to tell you that you just need to relax and dont worry about this problem if this is occuring from their server. You just need to save the screenshot of sending otp and not recieved by you and save the screenshot of the mail which you sent as a proof that you tried to connect with concerned authorities. It is state university they  knows the importance of registeration and they cant cancel anyone registeration just because of this

Hope you found this answer helpful. Good luck for your future