To edit an entry in TurboTax Online, you will need to revisit that section and use the guided interview feature to make any changes. You can also try deleting the form and then re-enter it again to see if that resolves the issue. See How do I view and delete forms in TurboTax Online? for instructions.
If you continue to have issues please see the link below to contact one of our TurboTax representatives:
What is the TurboTax phone number?