Hi, and thank you for your question.
First off, please open up the following link:
Sign in to your TurboTax account first, if prompted. Next, click on My TurboTax at the top.
In the Tax Timeline window, select Account Settings from the My Account drop-down in the upper right corner.
This will open the Review and edit your account info page, where you can update your User ID, password, name, email, security question/answer, billing/shipping info, and payment information.
Do keep me posted on the results. If you need more help, please use the Reply box below to continue our conversation.
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