Unable to connect to selected network. The network gateway is unreachable

Explanation:

Lightning device can not connect to your selected network because the network gateway is unreachable. 

Solutions:

• If 'PING' function has been disabled within your network or disabled on gateway, please make sure it has been enabled as it is required for Lightning device to detect the gateway connectivity.
• If you have used a manual IP setting, please make sure you have input the right gateway address.