Data not updating correctly

When I look at my data source within the app editor it shows one set of data.

But when I click “Edit data” it opens the google sheet and shows a different set of data.

What is going on here?

App and google sheets is not updated realtime with “free” apps.
You have to reload sheet in the edit menu to sync

Do you have empty rows between filled rows? Are you using arrayformulas and new data is being pushed to the bottom of the sheet? We need more information on what you see that is different.