After you file

I see that most of the comments are from Nov 2020. I am just finding that I too have the same letter on the IRS transcript site and it is March 2021.  JC, does the IRS really need 7 months to process my 2019 return I filed on 7/15/20 along with my check of $169?  I didn't get the last relief check of $600, is this why? They think I didn't file my 2019 taxes?  Complete BS.