By the way, these are not my own images. They were found using a Google image search. They appear here below, all centered:
Above should appear 3 images, centered. Now to review the app-displayed version of this page and see whether these additional embedded images show up!
(Follow-up note: Aha! The app version doesn't display these additional images... Now to debug and find out why that is. Could it be that they have to be all at the beginning of the text, or does the app ignore all future embedded image links?)