Performing a ping test
A ping test can be used to determine if your device and computer are able to communicate with each other.
Find your IP
Find your LAN IP address. The easiest way to do is to open the Unified Remote Server manager by right-click the notification icon or using this link: http://localhost:9510/web.
Install Ping app
Install a "ping" app on your device. Search for "Ping" in Play Store or App Store to find an app.
Follow the instructions in the ping app to ping your LAN IP address. If you are unable to ping your computer then something is blocking the connection. It might be your router, firewall, security software, or your computer and phone/device are on different networks!