PeeTee As I explained in the first post, I was able to connect to Plex DLNA and playing videos. So I'm assuming you're on the same page so far.
So first, all funscript files must be in the 'Interactive' folder of the Quest 2 and must have exactly the same filenames as the video files, except for the extension of course.
If you are there in the process and you can play your videos but no interactive icon (so no funscript detected). You should notice that video names are different than the real video filenames. This is because Plex cleans up filenames for display but DeoVR must see the filename that matchs the funscript filename. Depending on settings, some characters are removed (dash, underscore,etc...) and it capatalizes the first letter of each words. To fix that your library type must be set as "Other Videos", so in Advanced tab in libray editor, I have Scanner: "Plex Video Files" and Agent: "Personal Media". This way the only thing added to the filename is the year at the end. So to avoid that, in Plex, delete the date in each movie and the date will be locked with a default value. Just remember the filename in DeoVR should be exactly as the real video filename. Another solution is to add the year to the funscript filename only so it will match the new video filename without having to delete the date.
I'm still trying to forced Plex not to add the date, which is certainly possible.