Hi there,
if had the same problem with another theme in a just small different way.
The Investigation for the Problem is not that quiet easy if you have no experience in html and php but you can try it.If you are still searching for a solution here is what might help:
Navigate to your Editor so open your dashboard > Appearance > Editor
Search for the keyword "home", because this is where your Home Button is defined. In case you have found it there should be a "a href=" tag around it which is the html tag for marking a link. It probably should be in functions.php, index.php or header.php.
Check the Content of the "a href=" perhabs you can see the thing with the "/blog" now if not there will be a php tag.
Thats how the line looks in the theme i am using:
<a href="<?php echo get_option('home'); ?>/"><?php _e('Home'); ?></a>
Explanation of the code:
at first there is the html link which looks like this in default:
<a href=""></a>
Then we have 2 php snippets:
<?php echo get_option('home'); ?>
This brings you the your BLOG URL (http://www.myblog.com for example)
<?php _e('Home'); ?>
This reminds says here is something to do. In this case the Text "Home" shall be displayed.
Perhabs this will help you