Problem with account

Hi there !
I have an account that, I don't know why, GW says that it doesn't exist, what's weird is : when I put the connection info (email and character name) and then a bad password it's just : you enter a wrog email/password. But if I put the right password, it appears : error 021 email not found.

How can I try to take it back, since GW 1 support didn't respond to me ?

Ok, so I tried to connect on your link and it works, then I tried to reset the password and nothing happened... They just send on me on a page but the password didn't change.
I made it by myself (no reset, changing password). It works too.

But I still can't log in in GW, still saying : account not found when I enter the new password (if I enter the old password, it says : wrong password).

I know the account is still alive, I mean the characters on it are still there, and nobody has log in (so no hack). Account is linked too (as I saw in pantheon, I have 3 points for linked account even if this account doesn't have GW:EN).
Ok so I tried some things on the gw2 support and first : I can't post anything on it with the account name, I mean I can connect to Arena net, but not on the GW2 support. Second thing is : I tried to make an account for GW2, with the email of my secondary account, and I can't (it's said : we can't create an account with that information).

I don't know what to do now ^^. Btw, on Arena website (your link) if I click on "problem with your account" (right side of the page) it says that the page doesn't exist.

Thank you for your answer ^^.