How do you subscribe?

I am trying to subscribe to unlock all of my characters, I can log into the game with three of them. But anytime I click on the membership tab so I can sub, it tells me authentication failed.

Any direction would be appreciated.

Have you tried doing it via the ‘My Account’ page?

I have, that page tells me I dont have an account, even though I can log into the game. I am discovering, that because I have an original Funcom account, that I need to somehow link AoC to it or something for the web login to work, but I cant figure that out. I have TSW and Anarchy both linked to it, but for some reason, I cant figure out how to link conan to it.