Okay, I think it is important to clear this up right away. Those who are not of binary gender are NOT experiencing mental illnesses. I happen to be non-binary and mentally ill. My best friend, who is non-binary, is completely healthy in every sense. The thought "this is a disorder" is one that stems from correctional therapies that took place years ago and are still taking place in some areas of the world.
Gender does not dictate sexual attraction. I hope I am not coming off as rude, just sharing some info to clear things up.
"Gender issues" is not a positive term. I am completely comfortable in my gender identity. There is no issue with me. Dressing is an irrelevancy. Some trans*women dress like men, some dress like women, some dress like both! Never base someones gender on the way they dress.