Design changes cannot be pushed to server / 503 WebSocket error

I have encountered issues with Upverter for the last 30 minutes. Essentially, I can create and open a project in the EDA, but the moment I add a part I start getting notifications such as:

“Your design is not being saved. X actions are pending to sync.”
“Attempting to reconnect to server”
etc.

I have changed internet connections, browsers, flushed cache, reset router, etc. without any luck. The chrome console reports the following:

eda.min-c7b58591.gz.js:1825 WebSocket connection to ‘wss://upverter.com/ds-prod15.upverter.com-0010-0fdb9a1b62011c6b’ failed: Error during WebSocket handshake: Unexpected response code: 503goog.net.WebSocket.open @ eda.min-c7b58591.gz.js:1825`

Is anybody else encountering this?