The problem is that it is unfinished. Options such as removal of the "Add Blog" button on the frontend don't exist so you have to edit the code. Also the assigning of a menu item for "Single Blog" does not work. The listing says the extension has module(s) but they are not on the download page. However, the most annoying thing is that there is no option to sort blogs "Newest to Oldest". Most people would want a blog to display the newest content first so this is a pretty big oversight.
My component and modules working fine in all site, right now that component in more than 20 sites, You are make wrong link from the menu manager that's why give 404 error, we are already given support document when you are make order, if you are follow that document than easy to setup that.
Also we are not working on weekend that is mention in my site, please read the terms and condition when you are make the order.