International Okinawa Kobudo Association contact

I was trying to contact the organization with the email supplied in their site (budo@learnkobudo.com)for the past month but got no response in order to check the possibility of registering and joining them:

http://www.traditionaljapanesemartialarts.org/

i even wrote the same letter directly to shihan nishiuchi through facebook and still got no response.

I wonder if this organization is still alive and if it does - how it's possible to contact them.