Why are messages on the manage page not visible to other people sent via api?

Question

Facebook

Hello. Did the publication of messages on facebook on manage page. here . as it turned out at the end, other people do not see the posts that I published via api (the usual ones are visible). Although if I click the "View as the visitor sees" button, all the posts are in place. Added administrator rights to the user - also does not see. What is it connected with?