Hello Paul,

I am really sorry for the delay of this reply as it is a weekend for us here.
The reason why you hitting this issues is because your latest blog post module is put at the frontpage of your site and the latest blog post module setting Routing Behavior using Default Behavior. When you click that link, the module will use the front page itemid (home), so it doesn't go through the correctly page.
I help you change to Routing Behavior - User menu item, it work fine now.