Why different content showing on the homepage of site on SharePoint IOS App?

Dear all,

I am using SharePoint IOS App on my iPad Pro, and there different content showing when I touch on the site from the "Find" tab.

Site A: Showing the content of the homepage (site page):

Site B: Showing the quick launch with "Activity" list:

But the home page of Site on desktop version is also like Site A, as below:

remark: Both of site is sub-site of team site

Any setting can I align the homepage to Site A?????

Thanks,