Logo and Footer links in Maintenance Mode fix

The logo/title and footer link to site_url and that can be a problem when the site_url and home_url are not the same due to having wordpress installed in a separate folder.
With site_url(), the link will point to the wordpress installation folder location, in my case, http://site.com/wordpress, and not the index.php file location, which is the root of the site and Home URL.

I was able to easily fix it by changing the two instances of site_url(”) in the functions.php file to home_url(”)
They can be found in the get_logo_box() and get_footer_section() functions.

I’m not sure this is the correct procedure but it fixed the issue for me.

https://wordpress.org/plugins/maintenance/