All sites on VPS have been down all day, naturally chat is shut down today for National Dreamhost Employee pat-on-the-back-and-eat-donuts or whatever day.
According to the status page (https://www.dreamhoststatus.com/) , DH sez:
Email support operations will still be available should you need to get in touch with us. We will resume normal Live Chat operations at 5:30 AM PDT the next morning, Wednesday, April 25. Thank you for your patience and understanding. As always, email support will still be available. Please contact support if you have an issue.
However, no one is responding to tickets. No one is responding to tweets. No one is responding.