IRS will provide a Notice explaining the adjustments to your refund. TurboTax does not process any refunds and therefore cannot assist you with this issue.
The 2021 tax return requested information about the Third Stimulus not the second. Tax year 2020 requested information about the first and Second Stimulus payments. So, it makes sense that your refund is incorrect because you included a request for the second stimulus that is only on the 2020 return.
The second stimulus payments will be advance payments of the recovery rebate credit just like the first stimulus payments under the CARES Act. If you are eligible and do not get a payment or it is less than expected, you may be able to claim it on your 2020 tax return as the Recovery Rebate Credit. The IRS is directing tax filers, who have not received their full payment by the time they file their 2020 tax return, to claim the Recovery Rebate Credit on their tax return. TurboTax will guide tax filers through the process of claiming the Recovery Rebate Credit so that eligible filers get every dollar they deserve.
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