I bought a set of several videos and it is not longer available.

Hello, I bought a set of several http://blog.advids.co/20-video-marketing-examples-from-it-and-tech-supp…</a">IT support videos and they are not longer available. Not pretty often I use this platform, but I got forced to because a documentary I really loved once I saw it was not available on any place. I saw it several times but a month ago approximately it is not available now. What happens now? Are the videos just temporary unavailable? As far as I read when I bought the videos it said you could watch or download them anytime. Any help will be appreciated. Thank you.