I set the memory function, but the bulb didn't show the status I set on at a certain time.

1. Please confirm whether the automation is set (like Scenes or Routines). The bulb will light up according to the status set in the automation.
2. If you don't set any automation for the bulb, please try to reset the memory function of the bulb: After setting the status on the app, wait for more than 5 seconds before turning off and on the bulb.