This fixes that issue for most of the videos, but some aren't able to be fixed:
https://greasyfork.org/en/scripts/27076-twiz-allow-watching-video-with-adblock
The reason? The twiz website uses iframes to display the videos, and some iframes go to different websites that aren't possible to fix.
site requests to disable ad block to play any of the videos
http://twizporn.com/