Steamworks is not initialized
Can you please try to restart steam and try again?
something with community translate. Reinstall game has help. Sorry i'm russian!
This is an issue seldom but sometimes happening with Steamworks failing on its own DRM Check.
In most cases it fixes it self by a reboot, but in some cases it requires to reinstall the Steam client.
I am glad it is now fixed for you.
Have fun playing! :)
Customer support service by UserEcho