My child tax credit was incorrect due to Turbotax tool error where it didn't correctly take my children's SSN. Should TurboTax amend it free of charge?

For my 2023 tax return, I claimed my 3 kids, but only gave me total of $1500 for all 3. When I was reviewing this with a TurboTax live agent today, she admitted that there was an issue with the tool and asked me to delete and re-add my kids under my profile. After re-adding my kids, the child tax credit went up to $6000 for 3 kids. I would like to amend my return to recover the $4500 that I didn't claim, but TurboTax is advising me that I need to amend and pay for the process when it was Turbotax's tool that was at fault.

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