If you last logged into your AARP Smart Driver Course more than 6 months ago, you may have seen that you are back to the start of the course. State laws (and AARP's Terms and Conditions) mandate that courses must be completed within 60 days of registering for the course. (New York and Connecticut require completion within 30 days of registration.)
You have not been charged for this second version of the course. Your new 60-day window (30 days in NY and CT) to complete the course begins the next time you enter the course.