Your 2017 AGI amount needs to be from your 2017 tax return. See information below for how to obtain your 2017 return and where to find the 2017 AGI amount on the return:
https://ttlc.intuit.com/replies/3301618
If you do not have
access to your prior year return, you can request a free online transcript of
your 2017 tax return from the IRS. The transcript will include your 2017
AGI amount on it. Use this link: IRS Get Transcript