Hi, thanks for the response. I've cleared the wordpress app from Facebook, which does appear in the apps on my page. Blog posts don't update there though even when it is listed, and there is no 'x' to uncheck on the wordpress sharing settings page when following the reconnect procedure.
Every time I try to reconnect, I go the whole way through the process and when I click on the 'allow' button, the browser window goes white and nothing else happens, and if I try to refresh, the window closes as described above. I do not get any confirmation window.
WordPress does appear as an app in my facebook settings, but my wordpress settings page does not show any connection to Facebook. Blog posts do not appear there when I publish them.
Apologies if there is something obvious that I am missing, I'm still pretty new to wordpress! Thanks again!