When you log in to TurboTax Online, you should see an option to continue your return where you left off. Once you select to do so, you'll see your 2021 Taxes option on the left side, select the arrow to see the File option.
For information about entering a service code, please see the below help article.
MichelleLO:
My taxes are complete, thus no option to continue return.
Regards,
-Eric
If your return has been completed, you are unable to input a service code after filing.
@giagiacumo What do you mean complete? Have you filed your tax return and was it Accepted?
If you haven't efiled or mailed your return or it rejected you can go back in to finish and change anything you want. Do not click on Amend!
Click on Add a State to let you back into your return.
From Tax Home (the first screen you see after you sign in), scroll down to Your tax returns & documents. You may have to select Show to open the drop down.
Select 2021, and then select Add a State (you're not actually adding a state, this is just the workaround).