Are you using a 3rd party sim or the one which came with the Electron?
If it is a 3rd party sim the likely problem is that the connection has been closed by the cell tower. You can use keepAlive() as described here (https://community.particle.io/t/electron-3rd-party-sim-tips/26490) or a simple timed function which makes a publish command after x seconds. This will keep the connection active and your variables will update on your app.
Even if the connection has been lost the Electron still breathes cyan as it doesn’t know the connection has been lost.