Facebook won't allow my WordPress blog posts

WordPress lets us post our blog entries on Facebook, but there have been so many problems with this feature that I doubt if it is fixable. When I finish a blog entry now, the "Post" button is unavailable, so I have to type out the name of my site: https:// followed by the title. So people only see the first page and a lot don't know where the particular bl0g entry is, unless they wade through the entire site. Is there anyone here who uses an account like WordPress having the same problem? This is a very specific question, I realize, but between this irritant and some chat groups taking up half of my Facebook site, I am just wondering if it's worth posting anything on Facebook at all. (I know I have asked several questions and I apologize that I haven't been able to answer anyone else's yet).