Guild Wars 2

can Anet just block this ip?
this is the same guy who hacked in my email and gw2 account

No, they can’t block an IP for you. Each person has to keep their own computer secure.

If you haven’t yet, run a security sweep. Check for a keylogger. Once your computer is secure change your email password. Then change your Guild Wars 2 password. After that it wouldn’t hurt to change your Guild Wars 2 email.

And you can change your Guild Wars 2 email by submitting a ticket to support.