Ubiquity Lite beam M5 no nodes in scan

Your post leaves a lot of questions.  It is not likely at all that you saw hundreds of nodes.  It takes another AREDN node to see others.  It would seem that either you did not correctly flash the Litebeam.  Did you verify it took the flashing and have you set it up correctly, Channel and bandwidth.  Both must match surrounding nodes to operate correctly.  All of this must be verified and then we have something to work with.  Good luck.  Yes it's all a bit of a mystery especially the first time you set up an AREDN Node and the learning process never stops.  Give us some more info.
 

I assume you're talking about a WiFi scan.  The AREDN wifi scan will only see stations using the same bandwidth configuration as the AREDN nodes (20 MHz, e.g)   Many of the newer commercial wireless devices run 802.11ac, which can also do 40 and 80 MHz bandwidths.  The WiFI scan function will never see them.

Orv W6BI

The Wi-Fi scan will only show neighbors of matching bandwidth.  Your local area MESH may be using 10MHz? Hence it will only show MESH and non-mesh inits matching the bandwidth settings.  I'm not aware of any standard Wi-Fi units runnning 10Mhz or 5Mhz, however if you set your unit to 20Mhz, it will show any matching MESH and non-mesh sources running that bandwidth.