I take it the program is not telling why you do not get the credit. The 4 year rule is two-fold. If you had already claimed the AOC for four years OR if you had not claimed it for all four years but your school had "awarded' you 4 years of credits, you still would not qualify. Did you say you never got the credit previously when your parents claimed you as dependent?
Also, when you were still in undergrad last spring, how much in scholarships did you receive? Look at that.
