What? If you have not really e-filed your 2018 return, then you do not "amend" it. Amending is a special process you only use if you filed your return with mistakes and have to make corrections/additions after it has been fully processed. Stay away from clicking on anything that says "amend."
So you need your 2017 AGI to enter on your 2018 return in order to e-file it. If you have the 2017 AGI then enter it and e-file.
https://ttlc.intuit.com/questions/2551840-where-do-i-correct-my-2017-agi-in-turbotax-online
No one else has access to your account or your return--no one else can "fix" your return for you.
**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.**
