I want to create a schedule on the app so that my Beam, Beam Mini, Blizzard, Edge or North turns on and off automatically from 11pm to 9am, but I get the following message: "The power on time needs to be before the power off time." What can I do?

The app works with days. So you will have to set different start and stop times. For example:
- Start time 23:00 and end time 23:59
- The next day start time 00:01 and end time 09:00.
In the above way your device will run at the desired time with the schedule function.