Limitations of map expansion

Can you please explain more here? What is map expansion?

I am using an iPad 9.7 inches.

There seems to be a limit on the size of the map on the screen.

I'd like to make a more detailed flight plan.

It is difficult to plan detailed flight because satellite map does not become zoom in.

Can you please give us a screenshot of what you are talking about?

There is a button in the lower right hand corner that switches the camera and map position. Is that the issue?

I would like to see more details.
However, the screen is no longer enlarged.

This is the Republic of Korea.