Best is contact me on KEYBASE platform (encrypted chat with a Stellar wallet built-in).

My handle there is "knotwork".

The info pages at http://makemoney.knotwork.com/stellar/ should actually say that, also I set up a "federation info" thing that should let clients get info about the coins including a note about how to bail-in / bail-out which shoudl say to contact "knotwork" on KEYBASE.

Messaging here on the forum would work too but has no real expectation of privacy and in principle could even be spoofed by whoever runs these forums nowadays.

KEYBASE is end-to-end-encrypted, plus having the builin Stellar wallet kind of makes it "ideal" except for its wallet's lack of actual trading in the markets capability. You'll still need some other Stellar wallet to access the trading-pairs.

-MarkM-