No you can't get the 1200. It was not suppose to be on line 30 if you already got the first and second Stimulus payments. The IRS knows they already sent it to you. You can't claim it again. Your refund was too high.
You might have reported the wrong amounts you got or got the second one after you filed or entered the wrong amounts in the wrong 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 and gave it to you again.
