I need to clear and start over, but the site says it's too late. I haven't made a purchase and I haven't submitted anything to the IRS. I need to edit m return however.

[MichaelDC]

In TurboTax Online, you can't Clear & Start Over after you've registered.

If it's convenient, consider opening a new account under a new username.

Otherwise, try to post another question about your problem and someone should be able to help you fix it.