I have had links go down in remote buildings that feed the backbone connection to the Ubiquiti server controller software. That causes a disconnect to show.
Merely correcting the downed link causes that AP to be recognized and it reconnects to the server and becomes available.
I would think either you can bad communication to the AP or the AP itself has an issue.
Unifi ® video. Be compatible with your home network, computer or mobile device; (iv) or that ubiquiti or any third party will resolve any particular.
The Ubiquiti UniFi Discovery Utility includes tools that allow the discovery and management of UniFi APs. It is installed automatically as part of the UniFi Controller software installation process. See “Software Installation”.
Mine will flash GREEN when it is disconnected. You said yours is yellow?!? Yellow (I THINK) means it's not associated - or as Ubiquiti says 'adopted'.
View and Download Ubiquiti UniFi user manual online. Enterprise System Controller. The Ubiquiti UniFi Discovery Utility includes tools that allow the discovery and management of UniFi APs. It is installed automatically as part of the UniFi Controller software installation process. • Connection Displays the hostname, alias, or MAC.