At the morning my phone message me that there is a new software available, so, i did updated it.. Afterwards i have finnished my app and installed it.... when pressing Scan devices, the list is empty.. even i have paired devices on Bluetooth list on the phone.
Then i have tried with my old Android phone and everything is working well???!!?
No-one seems to have an answer for you, have you made any progress ?
Yes, i have solved the problem, Thanks for asking!