What you may not realize is that as soon as you began to prepare your tax return, the software was giving you the $4200 and it was shown on that "refund monitor" -----but when you entered that you received stimulus money already, the software had to reconcile the payment you received, You cannot get it twice---so it looked to you like you "lost" money. You did not lose it---you just cannot receive it twice.
Do you have a dependent? Did you also receive $1400 for a dependent? 3 x $1400 = $4200. If you only received $2800 last year then that is what you should enter and then you can get the $1400 for the dependent on line 30.
If you are not sure how much you received for the 3rd EIP----which is the only one you are being asked about for 2021---check your IRS accounts---for each of you.
https://www.irs.gov/payments/your-online-account
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
