Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
While I was playing in solo, I had the message "Connecting to Steam" with only a button "Cancel". After having waited a few minutes, I clicked on "Cancel" and the game exited. My internet connection was working correctly.