Didn't the prior answers clear it up? You WERE suppose to enter the 2nd amount even if you got it in 2021. It was an advance on your 2020 return. It came in Dec - Feb 2021. On your tax return 1040 line 30 you tried to get it again so the IRS took it off because they already sent it to you. Sorry, it should not have been on line 30.
