After you file

The missing $1400 is because you told the IRS that you did not get the third recovery rebate and they are saying that it was paid to you.  Some people just did not notice the $1400 deposit, some got it on a debit card and thought is was junk mail and threw it away,  some had a paper check mailed to them and someone else stole itl.  Contact the IRS and ask them what happened to the payment that they sent to you.