LRM client has the option to display messages within the simulator, these messages are rendered differently in our supported flight simulators and is determined by the way that your flight simulator of choice has implemented such messages.
Whilst the “older” simulators (Microsoft FS2004, FSX, FSX:SE, P3D and X-Plane) display these messages in a very similar way - they appear as a bar at the top of the screen and can automatically disappear after a short period of time, Microsoft Flight Simulator 2020, on the other hand, is actually very different in that:
LRM uses the in-sim notification system for various optional messages that can be enabled through the LRM settings which include:
We will need to enable the 'Software Tips' as MSFS calls them to allow LRM notifications in the sim. To do so:
LRM should now be able to send those optional messages into the simulator and have them displayed as you expect.