Taxpayer did not receive the correct first and second stimulus payments because they had their third child born in late 2019. I filed their 2020 return with the correct amounts. As soon as the return was IRS accepted, the additional stimulus payments were rejected. Taxpayer also confirmed he was sent the wrong amounts  by checking his account at irs.gov. Has anyone else run into this?

The only solution I have is to amend and paper mail it because I'd have to override the refundable credit line on 1040X.