How the hell do I play Klingon it only lets me play federation.
You have to play a Federation character to level 6 (ie Lt6). At that point you should get a chat message that 'Klingon Play' is unlocked (and you'll also receive a nother character slot on your game account too.)
You can then log out, log back in, and when you create a character again, you'll see the option to create a Klingon character. (The new character slot can be used to create/hold either type - it's just an extra slot you get when you 'unlock' Klingons.)
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You have to play a Federation character to level 6 (ie Lt6). At that point you should get a chat message that 'Klingon Play' is unlocked (and you'll also receive a nother character slot on your game account too.)
You can then log out, log back in, and when you create a character again, you'll see the option to create a Klingon character. (The new character slot can be used to create/hold either type - it's just an extra slot you get when you 'unlock' Klingons.)