You need to add the new authorized signatory (Principal contact) in e-Filing portal.
-Login to e-filing portal
-Click on ‘profile settings’
-Select ‘Update Principal Contact details’
-Add the PAN and contact details of the new Principal Contact.
-Click ‘Submit’
To update the DSC of new Principal Contact –
- Go to ‘Profile Setting’
- Click on ‘Register Digital Signature Certificate’