I need someone who knows the GST Portal inside out to add a brand-new email address to my registration. At the moment I no longer have access to the email that is on record, so the usual OTP route will not work for me. Here is what I expect: once you log in (I can supply the necessary GSTIN and current credentials), guide the process—or complete it on my behalf if authorisation is required—so the new email becomes the primary contact in the portal. The job is finished when the portal shows the updated email and I receive the confirmation message at the new address. If the task involves generating a DSC request, raising a grievance ticket, or submitting any supporting documents, please include that in your approach before we start so I can prepare what you need.