Hello,
Unfortunately, I am unable to answer your question; however, I was hoping you could provide your contact for purchasing the HL7 interface? I called the contact number on the hl7.org website and the person I spoke to was unable to answer my question and had me send an email with my question. Is hl7.org the source of your HL7 interface?
In reference to your technical problem, as the previous poster recommended, if you haven't already, it's probably a good idea to contact AC support.