Why cant I change expansions?

Hey, I havnt played Guild Wars in like a year or so..
And I only got Factions, and I've installed it today, but I cant play it cause "Eye of the North" comes up. Whats up with that :/?

Umm... Try hitting the "Enter" or whatever it says button which get's you into the game world and you should end up in factions.
Everyone has the EotN background at loggin from what I know...

Then I got another problem, says something about my router (I have never had that problem before). And it also said that an account with that accountname doesnt excist, and it excists..

Sure you double-checked the account name? and if you have caps-lock in (if you don't use it in the name)
And, also think about if that REALLY is the account name. If unlucky you might have forgotten the account name...

acount name is your email not character name btw