Cannot connect to the robot from Android app
Check the followings:
Check if the server application is running on the Jenny 5 computer.
Check if the Jenny 5 computer is connected to the hotspot of the phone controlling it.
Check the IP of the Jenny 5 computer (run ipconfig). If the phone and the Jenny 5 are on different networks, make sure that the router has the port forwarding correctly.
Robot does not move
Make sure that batteries are turned on.
Check if server application is running.
Check USB port numbers from Device Manager.