The American Opportunity tax credit has $1000 refundable, even without income/owing tax. I didn't make enough to have taxable income. Turbotax said that disqualifies me

I don't have any taxable income because I didn't make enough. The American Opportunity tax credit has $1000 that is fully refundable even with no income or owed tax. Turbotax is saying I am not eligible because I have no taxable income.