Can't connect a Bluetooth mouse

[elephant]

On FreeBSD 15.1-p1, I have in /etc/rc.conf

bluetooth_enable="YES"
ng_ubt_enable="YES"
hcsecd_enable="YES"
bthidd_enable="YES"
sdpd_enable="YES"

I press the discover button on the bottom of the mouse - a Logitech M557. The mouse LED begins to blink. I run 'bluetooth-config scan'. The mouse appears as a choice in a list. I select the mouse and follow the prompts. I see no errors. /etc/bluetooth/hcsecd.conf and /etc/bluetooth/bthidd.conf are updated as expected. The mouse continues to blink. Eventually the mouse goes to sleep. No mouse input.

Any ideas on how to troubleshoot this?

 

[elephant]

bluetooth-config scan
Scanning for new Bluetooth devices (Attempt 1 of 5) ... done.
Found 1 new bluetooth device (now scanning for names):
[ 1] xx:xx:xx:xx:xx:xx  "" (M557)
Select device to pair with [1, or 0 to rescan]: 1

Writing pairing information description block to /etc/bluetooth/hcsecd.conf.
(To get PIN, put device in pairing mode first.)
Enter PIN [nopin]:
Stopping hcsecd.
Waiting for PIDS: 3618.
Starting hcsecd.

This device provides human interface device services.
Set it up? [yes]:
Could not open config file '/etc/bluetooth/bthidd.conf'. No such file or directory (2)
Writing HID descriptor block to /etc/bluetooth/bthidd.conf ... success.
To re-read its config, bthidd must be restarted.
Warning: If a Bluetooth keyboard is being used, the connection might be lost.
It can be manually restarted later with
 service bthidd restart
Restart bthidd now? [yes]:
Stopping bthidd.
Waiting for PIDS: 3567.
Starting bthidd.