Before opening a support ticket please check the following.
Is your backend online, can you connect to it?
Are you connected to the VPN, if you have rebooted you will need to re-connect.
Is the default route installed? You are looking for it in the persistent routes section of
Answer: Use the -p flag when adding the route. You now need to re-add it.
Can you ping the internal IP?
Answer: If you cant ping the internal IP then your network adapter is not connected or setup correctly.
Can you ping the gateway IP?
Answer: The tunnel isn't online. Contact support.
In all cases we recommend a reboot and then attempting to re-connect before contacting support.