Problem With Mac:MacAppBlocker

Hi,i have a problem with my Mac.

I installed an app called MacAppBlocker(it put on every app that you wont a password):

I choose a Password but the app doesn't take the password that I choose, and the app put a password that i don't know.

When you download the app you have yet the terminal and other app blocked.

So i can't close the app with the terminal because the app it is on the status bar, and the terminal is blocked from the app and I can't close it too with cmd + alt + esc (you can close an app with the terminal using the command ''killall nameofapplication'')

So how can I close the app?
Please help me

(Sorry if i wrote wrong but I don't speak really well english)

Thanks to all.Giulio.