Could you check the pin configuration of PinOE?
Into "general", you need to tick the "HW connection" of your "Digital output". In this case your pin is really connected into your design.
[NOTE] PSoC Creator allows to leave a pin without hardware connection but in this case the digital pin is driven by "software".
Thank you for the reply. Now the problem is solved. But I didn't understand the cause of the problem. I just restarted Psoc Creator