For 2021 I was 20, could not be a dependent, and earned $7000. I was at college for only 4 mos (not 5 or more). TT says no refundable Am. Opp. credit. Error? Help, pls.

I believe I qualify for the refundable portion of the American Opportunity Credit ($1000), and I think the software is wrong because it thinks I qualify to be a dependent. I met all the other criteria. I answered all questions correctly.