Site error 404 page is not coming up when an incorrect address is given after the slash, a homestead page comes up instead.

This issue has not been resolved!  I saw an identical post from 3 weeks ago that claims to be resolved/answered.  I am having this issue right now, with ALL my 20+ sites.  PLEASE HELP!!  I have made CUSTOMIZED ERROR 404 PAGES for all these sites, and not one of them is working...