Connection between the Ignition server and the screen


I have a screen BENQ SL490 with android and a server where I install ignition, I’m projecting via web a project that takes the meters that are throwing my machines,

I see this through an internet browser (FIREFOX and CHROME) the connection is made but after 2 or 3 hours it loses connection.

already change the settings of the screen lock, the screens and the server are in the same network.