You may be on to something or you may be presenting the information out of context.
The 'free trailers' are yours for 14 days and the are rotated so that the collection is always changing.
The 'full shows' are purchased once and belong to you. You can download these 'shows' as often as you like. They are yours forever, even if you change your computer.
If you can say where in the FAQ you think the problem is, then I am sure Totem can fix it.