The General HCI Program is designed to be completed in 9 weeks.
After 9 weeks, you may request an additional 3 weeks free extension to make up for the days that you were not able to log in, or had Internet problems/technical issues, etc.
So you have a total of 12 weeks access.
After 12 weeks, you need to sign up for monthly Extension (Extra Fee) which is currently $90.00 per month.