The standard I/O connectors on the DC3IO are phoenix connectors and are included when you order a DC3IO. If you need connectors for the auxiliary I/O I can arrange to send to you for a small fee (~$25).
You mentioned that you had sent an email but I haven't seen one. I'm currently in Taiwan for the TIMTOS show so it's possible that I may have missed it but there are several people on the support staff back in the States that I'm sure would have responded had they received your email. Perhaps a problem occurred when you sent it or our spam filter killed it. I would appreciate it if you would resend your email so that we may address your concerns.