After following the steps at the T, I got the following error message when I try to open the website in the subfolder (shared hosting account):
"Warning: require(/home/<user-name>/public_html/<restored-site>.com/wp-includes/classes.php) [function.require]: failed to open stream: No such file or directory in /home/<user-name>/public_html/<restored-site>.com/wp-settings.php on line 267"
Notes aside: I think the coder too much Joomla oriented, instead WordPress oriented. As a result of that, the whole user manual and wiki has ONLY Joomla screenshots. You have to translate those instructions and images to how that could be in the case of WordPress. I would recommend to the coder to develop Support Documentation to WordPress users (screenshots and instructions), because those are pretty different from the viewpoint of a Joomla user.