you run into common XCUITest problem when some elements are not visible. this happens when elements like button or cell contains many other fields. it is just an iOS ancient bug.
the only workaround works for me mentioned in -> LeftTabBarItem of XCUIElementTypeNavigationBar not found by Appium
iOS developer need add IDs to elements that not visible here and explicitly mention them e.g. in “init” or “viewDidLoad” function. thus later these elements will appear below (after all elements) BUT you can see them.