Hello,
i have a problem with Lakka on my RPI3 and my BT 8bitdo SNES30Pro controller. I configurated the gamepad like in this link http://www.lakka.tv/doc/8Bitdo-Wireless-Controller/
It works, but when i reboot LAKKA and start again, the controller won’t connect automaticially again to the raspberry. What can i do?
I have been having the same issue over the last 3 days but on a mini PC. I just gave up and leave it plugged in for now and was going to troubleshoot later. So following this…
The support for bluetooth devices is poor anyway.
pairing only with a (second) PC and additional 3rd Party tools for Windows…
i think this make the whole BT Thing very unusable for many people
i ever had this issue, even with december 2016 lakka v1 version 
Here’s my solution for 8bitDos reposted from a previous thread. " A workaround I used was to create an autostart.sh file in the .config directory after manual pairing via the CLI. Here’s the entirety of the script. “( bluetoothctl; connect ADDRESS1; connect ADDRESS2 ) &”
Just make sure the joypads are plugged in and/or turned on while booting or rebooting the pi."