Oh dear, I think I may come across as rather dumb here, but... I need to donate and get a membership for the actual website to join don't I??
Waiting for a little money to come in so I can do just that already.
Three separate things right now:
1) forum account (is free, hello.
)
2) mythruna.com (is not free but you don't really need it yet... it just marks you as a donator)
3) my public game server... which you create an account on the first time you login.
Eventually I will have to provide a way to sync a (3) account with a (2) account because soon donators will get some in-game benefits. But right now you can fully play for free.