I  do not work for TT  ...   I simply state the situation as it is and offer other options for future use.  If you qualify please use one of the IRS  FREE FILE options that you can link in here :  https://www.irs.gov/filing/free-file-do-your-federal-taxes-for-free    For the 2020 return  H&R Block was no longer an option and for the 2021 return TT has also decided to not participate.

All  DIY tax programs guarantee the return will be correctly calculated  based off the your data entries.  So if you made an entry  error that   is not the program's fault.  

What is the TurboTax 100% Accurate Calculation Guarantee?

https://ttlc.intuit.com/community/charges-and-fees/help/what-is-the-turbotax-100-accurate-calculatio...