Why Students Don’t Qualify for the American Opportunity Credit

2018 was my 4th year of undergrad work.  I am not being claimed as a dependent by anyone else in 2018 and am filing single.  My parents claimed the credit for 3 previous years.  I am between 18-24 yrs old.  I manually downloaded form 8863 from irs.gov and completed it.  It shows that I should be moving $1000 to my 1040, line 17c.  I cannot determine where in Turbotax there is the information that is causing turbotax to decide I am not qualified.  Please help.