Hi, I have a similar problem.
I am using ODROID with Bluetooth ASUS USB-BT400
I installed the integration but it doesn’t show me any devices. Yes, phones, headphones, watches, just nothing, neither Apple nor Samsung. :-/
I have Bluetooth installed, iBeacon Tracker, in config.yaml Bluetooth:, restarted several times, turn BT on/off immediately at HA.
Any advice?