When I go to the website you indicate, it looks like the only update for my Adobe Acrobat DC Pro "Classic" is to 15.006.30069, which is what I already have (which is probably why when I do an update check it says none available). The update for the "Continuous" to 15.009.20077 will not recognize my version, so am unable to install it. I'm not sure what the difference between Classic and Continuous means, but clearly there must be a difference...
Greg