With the Personal A you have access basically to every video and construction except for this robot.
The explanation is available public at http://blog.fllcasts.com/post/150113458801/fllcasts-course-materials-and-subscriptions.
Full explanation copied here is:
"In the last year we have balanced the requirements of the content creators with the requirements of the subscribers. One of the changes was the introduction of Courses (and materials associated with courses). In this way at FLLCasts we have:
The reasoning behind this is that there are materials that are much more complex than others to be developed, to be presented and to be consumed. And in this way we build the courses.
That is why at the moment the building instructions for box robots are part of the course Box Robots for Robotics Competitions. Because of this you need a course subscription (Personal B or School/Team) to get those instructions.
Although we had the courses for a while, these are the first instructions released in this way.
More complete curriculum
The course subscription is cheaper than the pro subscription, but requires the use to subscribe for an year. The reasoning is that a user will take more than one course and this takes time. With this we are going for a more complete curriculum and resource in the field and not just small tutorials on specific subjects. The small tutorials will be still here, but probably more rarely.
Have a look. We are waiting for your feedback.
Let’s make it clear with an example
If you are a Personal A subscriber ($8 monthly), you currently can access all the videos. There is no restriction on this. Videos are visible in http://www.fllcasts.com/episodes/
You can currently access all the building instructions at FLLCasts except for only 1 building instruction that is the instruction – for the box robots.
You cannot enroll in courses. The videos of the courses are still available in the Videos page - http://www.fllcasts.com/episodes/, but the courses are and will be something more.
The courses are designed for people that are engaged for a longer period and need longer subscription. We are also balancing with the requirements for creating the content for the course which requires much more resources than “the single tutorials approach”.
Many of our subscribers stay with us for many months and even years and this is why we have made the longer subscription cheaper - it is a one time payment of $72 which is $6 a month.
This is a very new (a week old) approach for our platform and content, inspired both from the users and us so we do welcome feedback and considerations. With this new approach we seek to engage and assist our users for a longer period of time."