L10s ultra gen 2

Adding zones. Changing carpet areas etc.
I am trying to edit the layout of the room as I want it to mop non carpet areas and the auto planner seems to have added extra carpet. The moment I try to modify if I change the screen and come back it has gone back to the old things.
If I try to add a zone to help zone areas, I add it, and if I flick over to another screen (eg settings) and come back, the new zone has gone. any idea?

Hello, did you save the area after adding it? If you switch to other pages without saving, the area you have divided will not be automatically saved.

How do you create and save the zones?