How to correct the AGI
https://ttlc.intuit.com/community/agi/help/where-do-i-correct-my-agi-in-turbotax-online/00/26311
When did you file 2017? If it was late in the year try putting in zero for the AGI and see
https://ttlc.intuit.com/replies/5595742
If you can't get it to efile you will have to print and mail it.
