i have linked the Client with Steam, but everytime i try to start it, i get the following message: "Unfortunately, you must currently link your account to Steam in order to play Forged Alliance Forever. You can do so on https://www.faforever.com/account/link."
How can I fix this problem? When i try to link the client to steam again, i get the message that it is already linked.
From past experience with other users you most probably have more than 1 account and you are trying to login with the wrong one.
Is your client trying to auto-login? In that case, abort it and try to manually enter username and password.