Get your taxes done using TurboTax

You must have an another account that you filed the extension with.  Your name and personal information would be there and not need to add them again.  Your extension will not be in an account without your information already being there.  Use the account recovery process to see what accounts you have created.

Use the Chrome browser even if you have to download it.  Clear browsing data for all time.  Then log in and see if you can get to the page where you pay.  You might have to upgrade to Deluxe if you are in the free version.  You need to have a paid version to print the extension.