Bluetooth: App not receiving data from Arduino HC-05

In Designer ClientBluetooth.DelimiterByte : 10

In the example of @uskiara in Designer Clock Enabled.

Comment out all // Serial.println except Serial.println("j");
What do you get on your Serial Monitor when you press the joystickbutton: buttonState?

What Arduino terminals do you have the BT module connected to?

How many bauds is your HC-05 set to?

More examples: