State tax filing

you can try calling the Illinois Department of Revenue to fully explain your situation and find out what needs to be done. tell them you were a full-year non-resident. 

that Illinois address and may the driver's license is probably what's creating the problem. you may be asked why you used that address and or why you have an Illinois driver's license if you weren't a resident. hope you have an answers they'll accept. did you have an LA driver's license. 

To receive assistance by phone, please call 1 800 732-8866 or 217 782-3336. Representatives are available Monday through Friday, 8 am - 5 pm. Our TDD (telecommunication device for the deaf) number is 1 800 544-5304.

 

you do not have to contact them yourself if you are willing to pay for others to provide help

you can use a partner of Turbotax even if you do not have Audit Defense

The Audit Defense service is provided by TaxResources, Inc., also called TaxAudit.com, in partnership with TurboTax. If you paid for Audit Defense and you received a notice, call TaxResources, Inc. at 877-829-9695, or report your notice on their website at http://intuit.taxaudit.com/. Do not contact the tax agency until you have spoken to TaxResources. They may contact them on your behalf.

 

or you can use a tax professional such as a CPA or lawyer

 

The Illinois Federal State Exchange https://www2.illinois.gov/rev/individuals/Pages/FSEU.aspx