Trying to e file. CRA cannot accept. Made a mistake setting up and indicated first time user. How to change this?

Please follow these steps to change your answer:

1-Open your return

2-Go to My Info - Go your Personal Information

3- You will see the question "Are you filing an income tax return with CRA for the first time?" Please select "NO" then click on continue. 

4- You can then return to "File" to NetFile your return.

Thank you for TurboTax.