Launch the Settings application

Go to General under Settings

Click VPN

Click Add VPN Configuration

Click L2TP and enter the following information:
​Description: LimeVPN L2TP
In the Server Address field, enter any one of the server mentioned under http://network.limevpn.com/
​Account: Your LimeVPN login email
​Password: Your LimeVPN Password
Click Save
Enter secret key private and Save
​NOTE: If you are using a dedicated IP (LimeVPN Pro) or eu10.limevpn.com , then the secret key will be limevpn

To connect to VPN, make sure your VPN profile is selected and slide the VPN button right to connect