Kinda late to this but just something I'd like to add.
Keep in mind the secondary effects that dealing with GID can have on people. Sometimes it can make people naturally introverted, withdrawn, or uncomfortable in social situations. This isn't the case for everyone, but something to be aware of whenever you interact with folks, even in a like-minded community environment, is that having something in common with a person doesn't always mean you have something in common with them, if you get what I'm trying to say.
Whether they are open about themselves or not, it may be the case that they feel awkward or anxious during interactions simply because in dealing with their inner self-determination, those feelings and behavioural processes are a by-product of it. I find it useful to observe the way someone is before making any sort of approach, even in a like-minded setting. Body language, mannerisms, overall comportment can tell you a lot about how someone will react and how any sort of conversation is likely to go.
Whether the prospective conversations are related to gender or not, GID can sometimes affect people in far reaching ways, not immediately apparent. Someone you don't know may not want to talk because they feel some things are a deeply personal matter, but some may just not know how to go about it because they're not used to human interaction, or anyone being interested in them.
Just something to keep in mind. Be patient, and watchful.