the AskForPermission block should be the only one in Screen.Initialize, you can move the other blocks into the Screen1.PermissionGranted event
also to Enable Bluetooth takes a litle bit... let me recommend to start scanning after for example 5 seconds...
you might want to use Logcat to find out, what is going on..
Taifun
PS: I removed your project, because it contains a paid extension... thank you for your kind understanding!
Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by 
Taifun.