Gabby, this forum is not so much an exes forum as it is a forum for people to investigate and discuss Narconon. Exes are welcome, of course, to take part and there are some here, but I'd venture to say at least half of the active members, if not more, are "never-ins".
I think if your goals are to "provide help with reconnecting with loved ones still in the CoS" and/or "help restore communication between family members or friends", you are not fully aware of the many deep and troubling issues involved with disconnection. Any member of a A/V team, no matter how sensitive and caring, is more prone to upset the delicate balance many families live with daily than to reconnect anyone. I think you're just not familiar enough with disconnection and need to do more research, and perhaps consider a different angle that might turn up more participants.
That said, I wish you well with a documentary. A mention of Narconon in a documentary would be great, if you could manage it. (Of course, it's another rabbit hole, almost as extensive as scientology itself.)