Advice/Help needed with situation concerning cooperation regarding Fusion suggestion

[irrelevant]

In mid-July , I connected with a couple other Fusionists through here over cooperation on kind of a project we'd like to present. They had both written in the forum, and replied, with the utmost warmth and positivity about this.

However, one of them never mailed as promised -- nor answered to the messages I subsequently sent (both DMs and e-mails through here), or even has logged in (!) since that day they 1st DM'd me (2nd half of July).

This disappearing act is leaving us others in deep Scheiße as, aside from ofc wanting the person on board & from scratch, several of the great ideas we'd like to use came from them. We've no clue if allowed to use their suggestions if they choose to back off.

You just don't leave people in such a vacuum. Needless to say I'm pissed, frustrated, but also very sad and hugely disappointed. That's nearly 2 months of silence!

I know by now being a Fusionist alas doesn't guarantee all honorable behavior by any means. At the same time I've a very hard time reconciliating their earlier presence and so inviting words with this effective ghosting from one minute to the next, which smells of a gross two-facedness.

It's simply too odd, and I'm wondering if maybe something bad happened and/or would like to make some last efforts to get hold of them. The suggestion we would work on means a great deal to us and, it seemed, also to this person.

I know their 1st name and that they previously were involved with a certain function of Fusion. They also wrote openly about what they otherwise do, but there's no way of finding them by the latter alone. We're in different countries, which doesn't exactly help.

Being very uninterested in getting a load of flak over privacy issues (why not explicitly stating that data here, not even daring to post in the thread we interacted in) or whatever else, in trying to find out what might be going on -- yet not really have any other recourse, that I can see -- I now ask:

**What would you do in this situation, and any advice on how to try & get hold of said individual?**

Thanks in advance.