I'm moved to country where I have to use VPN internet connection. I can watch Lectures, I can use Dropbox. I can't just connect with internet, CS50 appliance (no IP in right bottom corner), can't update CS50 appliance (because there is no connection with CS50 appliance), when I opening Gedit there is not terminal window under the Gedit window. Please help me solve the situation to have a chance to continue my study.
From your comments, you are using an older version of the appliance. Consider upgrading to the latest one, by removing this one and installing the latest from here: manual.cs50.net/appliance/2014.
If this answers your question please accept it by clicking the gray check-mark to the left, so that it becomes green. You can also vote it up by pressing the up arrow above the check-mark. And don't forget to keep coding!