Turbotax can't help because it's the IRS computers that are rejecting your return even when you've entered the proper AGI. if you tried zero or the option never previously filed, if available, then it's likely you'll have to mail it.
there only other step you can take is to contact the IRS to see if they can explain the issue.
Call 800-829-1040
1) Choose your language,
2) Then choose option 2
3) Then 1
4) Then 3
5) Then 2
6) When it asks you to enter your SSN or EIN do nothing – wait - - After it asks twice, you will get another menu
7) Then 2
😎 Then 3
It should then transfer you to an agent. Note when its phone line are busy you may be on hold for a long while or disconnected
