IL State tax return rejected, unable to edit AGI

I tried to e-file my federal and IL state tax returns yesterday. The federal return was initially rejected because "the 2019 AGI did not match what the IRS had on file". State return was also rejected since the federal return was rejected. I checked that the 2019 AGI was correct, and since it was, I entered 0 in the federal return and re-filed. This time the federal return was rejected.

 

Now, the state return is still being rejected. When I click the 'fix my return' button, it takes me to a page that explains the error, but does not give me any option to edit what I have entered. I click continue, it tells me the return is 'ready to file', and if I click 'revisit' it just takes me back to the same screen where I can't edit.

 

Does anybody know how to fix this? If not is it possible to file the state return by mail but not the federal return? I don't see any way to printe the IL return.