How much is on your 1040 line 30? Did you get the first and second Stimulus payments? Line 30 should be only if you didn't get it all or qualify for more. Maybe the IRS thinks they already sent it to you. Maybe you got the second one after you filed?
Did you enter the Stimulus you already got or reported the wrong amounts or entered the wrong amounts in the 2 boxes. If you entered the total you got for both rounds in the same box it would think you didn't get the other one. The IRS knows how much they already sent you. You might have tried to claim it again on line 30.
