Illinois State refund was rejected--"incorrect AGI" from 2023. Tax Transcript from IRS website confirms my AGI was correct. Federal with same AGI was accepted. Help?!

Take a look a this TurboTax FAQ - is your error code one of these?    You only need to enter one of those items - try last year's IL agi if the federal is not working.   You can attempt to e-file the state now that the federal is accepted.