Rhino License

After launching Rhino for the first time, enter your email address and check "I have read and agree to" for the End User License Agreement

On the next screen, click the "Options" link in the bottom left corner.
Click "Use the LAN ZOO"
Choose the option "Detect Zoo server automatically", and click continue.
A window that says the server is busy may pop up at this point that does not go away until you restart your computer. You can relaunch Rhino at this point and it will work or you can reboot your computer. The next time you launch Rhino it should automatically acquire a license.
If you have trouble, confirm that you are connected to the VPN.