From what I can see on the web, it appears that SecureLine is an application used to provide VPN services. If it doesn't work, then probably one of its modules is not working anymore. Since it's an application that doesn't require you to keep settings for or additional configuration files, simply reinstall the application. You can overwrite your installation or remove the current one and then download the latest version of the software. Make sure you noted your username and password for connection since the software is not free and requires authentication.