I'm fairly sure that you can review all of your documents before e-filing if you first make payment of your TurboTax Online fees. See the TurboTax FAQ I'm linking below for instructions. Please post back if you continue to have difficulty.
How do I preview my TurboTax Online return before filing?
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***