I have noticed a nagging problem with Elementor: if the top section is too close to the top of the page. It becomes uneditable. So you are stuck once you move it up. I am using Astra theme. I deactivated all plugins and switched to default theme and the problem went away. Anyone having the same problem? All current versions.
It's odd that you would be experiencing this with the Astra Theme. With Astra, if it sees you are using Elementor, it will have some added margin to the top, just enough space to access the section setting. Then when you view your page on the front end, this extra margin is removed.