Get your taxes done using TurboTax

I completed the Recovery Rebate Credit worksheet on Turbo tax based on the Letter 6475 that my husband and I each received. Turbo Tax calculated that we were due a $700 credit so I took the credit on my 2021 Tax Return. Now I get a letter from the IRS that I owe $700. I've tried to log into Turbo Tax to get a copy of the worksheet but I'm not able to. How did Turbo tax calculate my $700 credit?