Update: I think I resolved it. I don’t know how, but my balance was negative even though the UI said it was zero. So added payments were being credited against the negative balance, even though it was displaying a $0 balance the whole time.
Update: I think I resolved it. I don’t know how, but my balance was negative even though the UI said it was zero. So added payments were being credited against the negative balance, even though it was displaying a $0 balance the whole time.