Enps — Getting no results found for search criteria when trying to submit details

Hello team,
I have got a mail from CRA to complete my registration with required documents to unfreeze my NPS account.

But when i go to the OTP Authentication page and enter below details:
FIRST name: REKHA
date of birth 06/11/1987
email id: [Protected]

I am getting error message : "No Record found for the search criteria"

Could you please help me resolve this ? I want to invest in NPS this year