Because my client is a qbms (intuit) user, I have downloaded this plugin, and paid for the PRO version, and tried to register on the website for support. I too have heard nothing.
The reason for support is that since setting this plugin up on my site, with the self registration at check out, my website has had many spammed users show up, two days in a row. I’m not sure there are other qbms gateway shopping solutions for WordPress, but at this point, I think I just need to get a refund…which I’m not sure how to do if I can’t register…:(