I don't know what you want exactly, if you open the manager and you can't log in/error either reinstall it or something is wrong either with your net or neocodex and you cant log in.
If you want a proxy for the Score Sender, run the score sender, click settings->web settngs->check use a proxy and put in your proxy.
Hope that is what you meant.
well i know that but when i put a proxy in the web settings it gives me a error