When you properly dock a bike, you'll hear a beep and see a green light on the dock. If docking an ebike into a station, do not lock with cable as well.
To lock an ebike, remove the cable lock from the pink holder. Wrap the cable around the bike rack and then place the pin into the lock. You will hear a beep when the bike is securely locked, with the LED ring turning green and then flashing white. This signifies that your trip has ended.