What should I do when the IRS hasn't filed my paper return for 2019, and therefore I don't have an AGI for filing?

Basically, I had to file by paper in 2020 (sorry for saying 2019 in the question) because of a dispute with my parents claiming me and my not actually wanted to be claimed (long story). State returns went through and I've been twiddling my thumbs waiting for federal. Now it's 2021 and I'm trying to file but the IRS is rejecting my AGI because they never filed my paper returns. I'm worried about trying to file paper again. What should I do?