To update your TurboTax (non-Advantage) account email, phone number, mailing address, or password:
Sign in to TurboTax and select Intuit Account on the left, just above "Sign Out" (you may need to scroll down; click or tap the 3 white lines or Tax Home if you still don't see this).
This will open your Account.
Select Edit next to the information you want to change.