Could not able to access my login, created account in month of feb and paid fees

Could not able to access my login, created account in month of feb and paid fees.
Now its denoting credentials not found.
Made new registration and asking to pay again.
g.sathyanarayanan@gmail.com
payment done on 6th or 10th feb 2020

Hi,

What is the email ID that you used to sign up and make the payment the first time?