I am running into a similar issue, only a small number of my devices appear in the UniFi integration.
What is odd is that the device tracker entities are not disabled.
What can I do to add devices to UniFi?
UniFi Device Tracker:
The device must appear under the UniFi Devices list to force it to reconnect as a wireless client.
I do not remember doing anything unique for devices like my monitor to appear combined:
List of Devices:
