how does this website now my ingame guild wars name

[I killed it yeah]

i have 2 computers one of them has guildwars installed and on the
other one i installed it and then
deinstalled it couse it didnt work.
on the computer that didnt had guild wars installed i made this "acc"
and they new my ingame name ( i killed it yeah ) how is this
possible ??

[BEEFJERKYHUNTER]

I'm sorry, i don't really understand what the problem is.
Are you wondering how someone knows your account?
or something else? Can you explain it one more time?

[Falaria]

The account you created and all it's characters, names and contents
are stored server side (Anet's game servers and data base.)
You can log-into your account from any computer. Be it at your home,
work/office, library or internet cafe. If that makes it any
more clear I don't know. Perhaps I don't understand what you're asking
as well.

[BEEFJERKYHUNTER]

Actually I do believe you've answered his/her question.
Yes I did study this message for a little bit.
Well done bubs!