Does the Manage screen show real time values?

LoRa sensors are designed to wake and send readings on an interval (varies by sensor, and configurable to client needs), but sleep the rest of the time. This allows them to maintain multi-year battery life.

As a result, the latest reading shown in the app is as up to date as of the last transmission from that sensor. 

The Manage and Sensor Map screens do update as new values are streamed in from a sensor.