Hello Smriti,

You should try visiting the following link:

cdn3.digialm.com/EForms/configuredHtml/1815/57907/login.html

If it doesn't work, you should look through your emails, you might find the required info.

If you still can't find the roll no., send an email to helpdesk containing your registration details at nbeexamhelpdesk@gmail.com, use the subject line as 'Grievance Ticket', they will get back to you in 24-48 hours.

Hope this helps you out.

Best wishes.