I have used this remote with Jarvis OSMC before. Now with a fresh install of OSMC Krypton Beta Bluetooth doesn’t stay enabled after a reboot. I don’t think this is related to the remote. I have found this topic where you did suspect the RPi3’s Bluetooth to be the issue. However this is still not resolved it seems or came back with the Krypton Beta. I will provide a log if I find the time over the next few days.