It says "disabled port" because there is no one connected in this interface. Connect your laptop in wlan1 and you will see that it will say "designated port" like ether1.
I encountered a issue with a disabled port on a 493 connected to 433 AP, it was due to water ingress on the poe socket on the box housing the 433 causing the rj45 terminals to arc and finally go open circuit, thought the 493 was damaged but removing the power and reapplied resulted in disabled port becoming active again?