So exactly $1400?
LOTS of people have made mistakes this year with the recovery rebate credit by "forgetting" that they received the $1400 per person stimulus checks last year. They answered no to the questions for the recovery recovery rebate credit and put the $1400 per person on line 30 of their returns. But you cannot get it twice, so the IRS removes it when it is there by mistake.
Try checking your online account with the IRS
https://www.irs.gov/payments/your-online-account
Does the IRS show that you received a $1400 stimulus or EIP check in 2021? Did you receive it? When you were asked on your tax return did you say no? Was there $1400 on line 30 of your tax return?
If the IRS says you got $1400 last year but you did not receive it you can have it traced.
LOST THIRD STIMULUS CHECK
https://www.irs.gov/newsroom/questions-and-answers-about-the-third-economic-impact-payment-topic-j-payment-issued-but-lost-stolen-destroyed-or-not-received