Randomly all four sensors displayed the "red X" on the app even if data points are shown in Grafana. In the past, this was resolved by resetting the app, but it did not work today after 3 resets. The phone was restarted in attempt to fix this--but then the app would not open up. Phone was restarted a 2nd time. The app opened up with no indication of sensor data quality (see attachment). Then all sensors were the "red X" again. This started at 3:12pm on 1/9/2019. Still haven't been able to get the sensor data quality to show on the app.