Client offline?

Since you did not provide us with more information, I'm going to assume you're having a common issue that prevents you from accessing the game. I don't know what the cause is, but I do know a few solutions. To learn whether you're having the issue I'm speaking of, create another account and see if you're able to access the game with it. If not, attempt either of these two:

• Change your IP address or use a VPN (Spotflux, HotSpot Shield, etc.).
• Wait for the server to restart.
  

However, if the newly created account successfully accesses the game, either continue playing on that account, or rely on Plural to help you.