I literally got a client today whose RRC was reduced $333. This is not a small amount (smaller than the $1500 with your client). 

My client states she did not receive a 2nd stimulus payment. So, I properly showed the correct amounts. My figures are as they should (ProSeries) be. It is either IRS error or IRS will state taxpayer received 2nd stimulus. 

My question is, does IRS provide copies of cancelled checks?