So I can't make it work, I found this: https://ericasberry.com/blog/2016/09/30/pairing-a-logitech-mx-master-mouse-with-ubuntu-16-04-using-bluetooth/
Ubuntu 15.10, logitech mx anywhere mouse pairs but doesn't do anything
and this: Ubuntu 15.10, logitech mx anywhere mouse pairs but doesn't do anything
But still can't make it work.
When I type this command, I'm getting:
$ hciconfig hci0 sspmode 1 Can't set Simple Pairing mode on hci0: Network is down (100)