Hello. This is the usual message you receive when server is down (99% of the times scheduled maintenance, and sometimes unplanned downtime).
If the game is still not working for you, please uninstall and do a clean install again. (Make sure to restart PC as its easier way of clearing cache after uninstalling)
Hope that works for you. Let me know how it goes.
Try to do this and please let me know in that thread whether it worked for you.