Let me explain ... you did NOT use one of the DIY programs ... you employed a third party CPA to complete and file a 2021 tax return for the original price you agreed to pay.
Now to file the amended return you can:
(1) pay the upgrade fee the CPA is quoting you if you want them to do it
(2) do the amendment yourself manually ... get the forms from the IRS to fill in and mail
(3) use one of the TT programs (I suggest you ask TT for a downloaded Deluxe version if they will give you one for free otherwise buy one)
(4) use a different tax pro
