I can't log in in the game.

Unable to connect. Please try again later. If the problem persists, please contact technical support at:(Blizzard's link) this message appears when i try to login

did you just download the client ?
In this case follow these steps:
1) Restart your PC
2) close your Torrent client and move your WoW folder away from your Torrent's download destination
3) now right click on WoW folder> Properties> remove "read-only"

Be sure to log in using your Warmane account name, not email address

Thanks, man. Worked!