HI , well there are 2 sides you can monitor its progress or control. Or when you put your clothes in you need to press the smart control button so you can remotely control it. This locks the door so then u can control it from the phone. If the door is unlocked it will break the connection to the phone as a safety feature.
You can do delay through the app or on the product which model do you have ?
the smart control but is on the far right on the ops panel rectangle that turns smart control on and off. so stick washing in and press the button then u can control from the phone . delay end is under laundry planner in the app.