First, please ensure that you have Internet connectivity within your Kali Linux virtual machine. For basic network configuration on Kali, you can refer to the Kali documentation site at: https://docs.kali.org
If you do have Internet connectivity and are still unable to connect to the labs, ensure you are not behind any firewalls that are preventing you from establishing an outbound connection to the labs on UDP port 1194.
If you are still experiencing issues with VPN connectivity, please send us the output of the failed VPN connection attempt along with the output of the “ifconfig -a” and “route -n” commands.