Temp URL Redirect Loop

I am attempting to set up my site using a temp URL (IP/~username/domain) through hostgator, but I am running into some issues. I have gone into the database and replaced all instances of my old domain with the new temp URL.

Problem is I am running into a redirect loop. I read somewhere to try resetting permalinks, but I don’t have access to the admin panel. I’m not sure what else to try to fix the redirect loop. I even replaced my .htaccess with a fresh one, and still get the redirect loop.

Here is my current wp-config file:

define("WP_SITEURL","http://IP/~username/example.com");
define("WP_HOME","http://IP/~username/example.com);

define('DOMAIN_CURRENT_SITE', 'IP/~username/example.com');
define('PATH_CURRENT_SITE', '/');

And my current .htaccess:

###############################################################

# BEGIN WordPress
<IfModule mod_rewrite.c>

RewriteEngine On
RewriteBase /
RewriteRule ^index.php$ - [L]

# add a trailing slash to /wp-admin
RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) $2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*.php)$ $2 [L]
RewriteRule . index.php [L]
</IfModule>
# END WordPress

##############################################################

<IfModule mod_rewrite.c>
Options -MultiViews
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !.*.(jpeg|jpg|gif|png|ico)$
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /home.php [L]
</IfModule>