Perhaps the shutdown has something to do with the product possibly being based on Google Talk? The port requirements for the print server include: “5222 TCP (XMPP, using STARTTLS), with a persistent connection to: talk.google.com.” [1]
[1]: https://support.google.com/a/answer/3179
(Note: I also posted this comment on https://news.ycombinator.com/item?id=21600206)