I see I'm not the only one that encountered this issue. See ticket-
It's an easy fix, just update your auto responder for support@hubitat.com to advise your users to go the the forum for help, and that directly emailed tickets will no longer be answered.
Probably a mailer at the time you decided to do that would have helped, and maybe a reminder in your mailings on how to get support would help too.
I've been working in support desks since '94, and owned a company with 150,000 subscribers (strongvpn.com) so managing support issues is my background. I would like to see Hubitat gain all the success they want as I currently own and use more than 14 hubs.