I'd just contact ITSA for advice. There's a toll-free number residents of some countries can use or you could email them if you want stuff in writing.
I'm not convinced that the other directors of HNT aren't just as liable as Andre, but that's only an issue if people are lodging lawsuits.
Thanks. I'll do that and report back here.
Incidentally, do we have any proof that we were really dealing with Andre or High Net Worth Property and not just an anonymous Internet scammer using those identities?