After installation, you will be given the option to connect using a specific URL.
Or you can manually do this by using the "Change Server" option on the taskbar.

When requested for a Server URL use the following string:
https://apps.vas.aero/https/connectme/Citrix/PNAgent/config.xml
Once the configuration completes, you will be asked for your credentials.
Be sure to use your VAS credentials [example below]