It seems to me that Live Test on Android doesn’t work as expected.
I used that simple program:
whilst I can feel the vibration, the label text remains forever with value “waiting…”, so it seems the block inside BLE Scan is never executed.
Another BIG defect (when compared with App Inventor BLE support), is that the Thunkable app is unable to warn automatically the user about activating Bluetooth in case it has been turned off.
I’m using Android 8.0.0 on Samsung Galaxy A5 2017.