product links are awry

[ghmercado]

my wordpress blog is at https://domain.com
my whmcs is at https://domain.com/client
admin is at https://domain.com/client/x

the link to my hosting packages is working fine at https://domain.com/clients/index.php?rp=/store/managed-wordpress-hosting

my created product link is also working https://domain.com/clients/index.php?rp=/store/qboxmail

but when i click on ORDER NOW, it goes to https://domain.com/cart.php?a=confproduct&i=1

and this produces a wordpress 404 page.

It was working bef ore i put in the wordpress blog.
if its any help, here's my wordpress htaccess:
 

# BEGIN WordPress
# The directives (lines) between "BEGIN WordPress" and "END WordPress" are
# dynamically generated, and should only be modified via WordPress filters.
# Any changes to the directives between these markers will be overwritten.
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

here's my whmcs configuration file

<?php
$license = ' Leased-b502e97aaf23fdba0fc1';
$db_host = 'localhost';
$db_username = 'somedir_whmadasdbuser';
$db_password = 'asdasdasda3f';
$db_name = 'wpasdasdasdhmdb';
$cc_encryption_hash = 'Jp2asdasdasdsdasdasdkOOf189MOylvMxTBQB0n';
$templates_compiledir = '/home/somedir/templates_d/';
$mysql_charset = 'utf8';
$templates_compiledir = "/home/somedir/templates_d/";
$attachments_dir = "/home/somedir/attchments/";
$downloads_dir = "/home/somedir/ddwnloads/";
$customadminpath = "x";
date_default_timezone_set('Asia/Manila'); 
$display_errors = false;
$whmcspath = '/home/somedir/public_html/clients/x/';
?>

any help appreciated!!

[ghmercado]

fixed it, i forgot to change the whmcs system url in General > Settings to 'domain/clients' after i transferred whmcs to a subdirectory.