I have used Turbo tax for the last couple decades. Filled a joint form with my wife and I where I put childcare tax credits but got the ON479-A CARE credit applied but was ineligible for due to income. It was an error in the program. Not sure how to address this as it's not a small amount and interest applied. Presuming the 100% Accurate Calculations Guarantee should have caught this for the 2021 to 2023 tax years as we just got our reassessment stating the error.