Mine also fails on a UCK2p. I think there was a change in paths and authentication when the firmware bumped to 2.x and UniFi OS that has broken this.
More info in this thread: Ubiquiti Unifi Binding Feature Discussion - #1128 by pagm
Mine also fails on a UCK2p. I think there was a change in paths and authentication when the firmware bumped to 2.x and UniFi OS that has broken this.
More info in this thread: Ubiquiti Unifi Binding Feature Discussion - #1128 by pagm