Did you make an account?

Yes

Well that account you made is the account you use to log into the game

I did, but it keeps telling me that my name or password is invalid

I think (perhaps incorrectly) that DC Universe Online sends that as an email the moment you create a Station. I don't know if Planetside 2 does that. Check your email.
Beyond that contact the Planetside2 devs. Not sure if any Valve employees would have access to the information, try them last.
Could be a connection log text file buried deep in the Planetside 2 directory. If so I'm sure such a log would include the station name.

You are not mixing up your steam profile and your planetside 2 profile right?

oh, passwords (as well as usernames and station names) may all be case sensitive. You might have typed in the right letters, but had capslock on before(or now).

Okay, ill look at logs... Thanks for the responds guys

i tried both the name i create my planetside account with, my email and my steam name... nothing worked

Just use your planetside name. Try signing into http://www.planetside2.com/ and see if that works.

I'll try that... maybe something is still wrong with the EU launcher... But thanks for the help mate