It is not clear what you have done--or tried to do. When did you try to e-file your 2017 return? Did you prepare it using the 2017 software? If you just recently prepared it using the current online software that was a big mistake, since the current online program can only be used for a 2018 return.
If you prepared your 2017 return using the 2017 software last year and did not realize it had been rejected, then the only way for you to submit it now is to print, sign and mail it in. It cannot be e-filed.
Since your 2017 return was not filed, your 2017 AGI is not in the IRS system. Entering your 2017 AGI will not allow you to e-file 2018. As Hackitoff said, try using zero. If zero does not work then you have to print, sign and mail 2018 to file it.
Before you proceed, it would be a good idea for you to post here again to tell us what happened with those returns and what software you used so we can be more helpful.
**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.**
