@MakiahRay did you get a letter from the IRS saying they changed your return?
That sounds like one of the generic reasons why they adjusted the Recovery Rebate Credit on your return. A common adjustment is if you claimed the Recovery Rebate Credit on 1040 line 30 when you already got the 3rd Stimulus payment or reported the wrong amounts. Do you have an amount on line 30? The IRS knows they already sent it to you. Line 30 is only if you didn't get the full amount or qualify more.
The 3rd Stimulus was 1400 per person. It came out starting last March 2021. Double check your bank accounts and check both your IRS accounts if married to see how much the IRS sent you.
https://www.irs.gov/payments/your-online-account
