After you file

I filed 2020 taxes in February.  My refund was $4698 and I got them back few weeks ago.  However when I wanted to amend them due to being paid unemployment  I click amend and it says I am unable to amend them due to IRS  handling the unemployment tax break for those that already submitted taxes.   I did however notice for some reason the federal amount on turbotax  shows a higher number then the $4698. It shows $6162. The state tax still shows the same amount I originally received. I didn't touch anything so not sure why it shows a different number.  Does anyone know why?