I have the same problem with my Xperia XA2. Rebooting did not help and restaring the service did not seem to help. Restarting bleutooth would finish, but still with no working bluetooth. Restart bluebinder would result in a time-out. Looking at some issues on the bluebinder github page, I found that the rfkill command can list some info about your wireless connections.
[nemo@XperiaXA2 ~]$ rfkill list
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
Under the bleutooth information it first read “Soft blocked: yes”. Pressing the bluetooth icon on pull-down menu would switch the state between yes and no. Once I set it to the “Soft blocked: no” state as listed above I could restart the bluetooth and bluebinder services without problems and bluetooth was working.
Have not yet tested if it will survive a reboot.
When checking the status of the bluetooth service I still get a red line about the reset_adv_monitors_complete function. Not sure what it means, but maybe it will help pin-point the real problem.
feb 12 19:15:42 XperiaXA2 bluetoothd[8357]: src/adapter.c:reset_adv_monitors_complete()
Failed to reset Adv Monitors: Unknown Command (0x01)