FAQ: What Can I Do If an AP Fails to Detect Surrounding Bluetooth Signals and the Management SSID?
For Fit APs and cloud APs, the Bluetooth serial port and management SSID functions are automatically disabled after APs go online by default. When an AP goes offline, the Bluetooth serial port and management SSID functions are enabled again.
You can run the console ble-mode persistent command on the AC or leader AP to configure the Bluetooth serial port function of the target Fit AP to be always enabled.