HR Monitor: BLE, "Bluetooth smart" - Connection Terminated

[Tobias]

Hello,



I started a new topic because the old ones were quiet dated.



Description of Problem:



Nexus 5x with Android 7.0 Nougat , supporting Bluetooth 4.2

Heart Rate Monitor Sigma R1 "Bluetooth smart"



The system connects the heart rate monitor but terminates it without showing anything.



I think this is a problem with Android 7.0,

because other apps have the same behavior.

The Monitor works fine with a bluetooth smart zertified Smartphone Sony Z1 compact.



When I got it right, Bluetooth 4.2 should be compatible to work with the essential features of bluetooth smart.



I tried restarting (phone, oruxmaps, HR Monitor) and re-installing



Many thanks in advance



PS: while trying to solve the issue I accidently registered the HR Monitor as Bluetooth device. Is there a way

(beside reinstalling orux and loosing all settings) to delete a paired device in orux?