Trying to get support

I’ve called the phone numbers, e-mailed support, messaged the facebook page, even followed the link to the Zak’s personal page and e-mailed there (kicked back) but have received no response.

Is Upverter still an active business or is the website just on autopilot?

Officially I don’t know either.
BUT, I can say, support here on the forums is non-existent. Just look at the lack of responses from anyone at Upverter regarding bugs, support, improvements etc. So I’m not really surprised you’ve received no reply.