My access points all say "No clients currently connected to wireless device.". When I first installed the demo version of Orion, all my APs showed clients. I did not assign any UnDPs to them or anything. They just worked.
When we actually purchased Orion, I cleaned out all the devices that I'd been testing with and started over by adding nodes manually so I could make sure I stayed within our licensing limits. Now I cannot see clients on my APs.
My APs are all Meraki MR devices.