hi,

I suggest you once more try in another browser , however if the error is continuously showing than you need to immediate do  contact with the study center where you have registered first, however due to covid 19 pandemic there is high chances that institute office may close. I have given a link below where you may get the email Id and center wise contact details.

Student Enquiry Numbers:29572513, 29572514

http://www.ignou.ac.in/userfiles/ContactUs-2019.pdf