I entered a wrong password, what now?Simply delete the "Launcher.dat" located in your game root directory.
When you launch the tool again, it will prompt you to enter your password.
What background processes are killed?Killed background processes are "Tera-Launcher.exe" and "TL.exe".
The first one is the actual Launcher, the second one is just needed to launch the game.
Once you are at the character login screen, they are completely useless.
How does the Multi-Account support work?The tool creates the credentials file based on the exectuable name.
For examle if you name the executable Account2.exe, the encrypted file will be called Account2.dat.
So you are able to create Launchers for multiple account. Don't rename your Launcher.dll!