You need to add the Permission_Access_FINE_LOCATION to your project.
Check the RuntimePermission library in the Libraries Manager Tab.
Add this line in the ManifestEditor:
AddPermission(android.permission.ACCESS_FINE_LOCATION)
And add this code at the beginning of the routine where you connect to Bluetooth.
Public rp As RuntimePermissions
rp.CheckAndRequest(rp.PERMISSION_ACCESS_FINE_LOCATION)
Wait For Activity_PermissionResult (Permission As String, Result As Boolean)
You might have a look at this thread:
Android Bluetooth / BluetoothAdmin Tutorial