What mailed return did you get back? If it was a 2019 return, your W-2's do not show your AGI. Your 2018 AGI is on your 2018 Form 1040 (your tax return) If you in fact have your 2018 AGI from line 7 of your 2018 Form 1040, then you can try to e-file your 2019 tax return.
https://ttlc.intuit.com/community/agi/help/where-do-i-correct-my-agi-in-turbotax-online/00/26311
No other tax year can be e-filed. A 2018 tax return (or any earlier year) has to be printed, signed , and mailed.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
