Facebook and WordPress sync Problem

Ok, so here’s my problem. I have a site with godaddy.com and it’s a wordpress hosted site. https://www.parklandcrossfit.com and what im trying to do is sync my wordpress with my facebook. I want my facebook to update when i post a new thing on my wordpress website. But i’ve tried they way you do it with the notes…and add it like that…and it tells me the url im using is not valid. Or the other way is by adding the wordpress app to my facebook, but when i do it that way it says to enter my user name and i do and it tells me my username is invalid…the only wordpress account/blog i have is the one for my website…which i get there by going to https://www.parklandcrossfit.com/wp-admin can anyone helo my sync my facebook with my wordpress please?