Filed 2023 taxes with FreeTaxUSA and 2210 was included for federal return but not IL-2210 for Illinois return. Because of this, IL DOR assessed underpayment penalty for the 2023 IL tax return even though we paid estimated equal to 110% of the previous year's taxes. Since we are not able to file the IL-2210 when e-filing the Illinois return, should we fill a paper IL-2210 and mail it in as soon as we e-file the Illinois return? Or is there a better way to handle this? Thank you.