Is there anything on how these programs work? I keep getting invaild neo module..

Works normal and it's not complicated in use.
If you cannot use it - you must have something wrong with other files.
Note that it works fine for hundreds of other websites.
Works also on demo website for newest player version.

Note that both: preroll and postroll can be displayed only once for each video.
It would be annoying to display it everytime video is replayed.