This is for a client so I won't share exact domains but the problem is as follows..
I took over development of a website from a prior developer.
The hosting is Hostgator Business.
The primary domain is primary.com. There is an addon domain addon.com.
The primary domain document root is /home1/username/public_html. The addon's document root is /home1/username/addon.com.
www.addon.com had a WordPress installation which the developer had edited instead of using plugins to achieve his goals. The site also needed a complete redesign so I felt it logical to simply wipe the installation and replace it.
So, I deleted all of the WordPress files and uploaded a new copy of WordPress from wordpress.org/latest.tar.gz
Prior to deleting the old installation, the domain loaded files from it's document root perfectly.
After uploading the new installation instead of resolving to addon.com it is instead resolving to primary.com/addon.com
I've never seen this happen before so I'm lost. There's no errors in any available logs.
All file permissions are correct.. I've triple-checked.
I've tried deleting all files and creating simple index.php and index.html files to see if it would access them ... it doesn't.
This happens in each browser I use on Windows and Linux.
I don't understand it because all I did was swap out the old WP install for a new one.
I went and re-uploaded the old WordPress installation so everything is 100% how it was but it is still going to primary.com/addon.com instead of addon.com.
Has anyone faced this issue before? I usually use Bluehost but even when I've used Hostgator in the past I've never seen this happen.
I double-checked the addon domain settings as well as anything else I could think of and everything appears normal.
I even deleted the addon domain and re-added it with the document root of /home1/username/addon.com and it still goes to primary.com/addon.com in the browser.
I submitted a ticket with Hostgator but they have not replied yet.
I'm sorry if this is long. This is my first time asking for help on here and I wanted to be sure I included everything I could.