Sitemap link bringing to homepage

Hello

We have a problem with our wordpress website.

We have setup Yoast SEO and WPML , we also have template 3clicks.

When we try to access our site map link (here /sitemap_index.xml) by typing the related address, it show us the homepage instead of the sitemap page. The phenomena is similar to when you have a broken link with 404 redirection to the homepage of your website instead.

I have to mention that our website is set up at the following location on the server: \public_html\site_en (I also attach the htaccess content which is in our public_html folder, I have replaced our website by domain.com and the content of the HTACCESS located at public_html\site_en)

Any idea where this problem may comes from ?

Thank you in advance for your time.

Rgds

HTACCESS AT PUBLIC_HTML

# Use PHP5.4 Single php.ini as default

AddHandler application/x-httpd-php54s .php

# File modified on Sun Mar 30 01:22:23 2014 by server

# For security reasons, mod_php is not used on this server. Use a php.ini file for php directives

# php_value max_execution_time 90

# .htaccess main domain to subdirectory redirect

# Do not change this line.

RewriteEngine on

# Change example.com to be your main domain.

# Change ‘subdirectory’ to be the directory you will use for your main domain.

RewriteCond %{REQUEST_URI} !^/site_en/

# Don’t change the following two lines.

RewriteCond %{REQUEST_FILENAME} !-f

RewriteCond %{REQUEST_FILENAME} !-d

# Change ‘subdirectory’ to be the directory you will use for your main domain.

RewriteCond %{HTTP_HOST} ^(www.)?domain.com$
RewriteRule ^(.*)$ /site_en/$1

# Change example.com to be your main domain again.

# Change ‘subdirectory’ to be the directory you will use for your main domain

# followed by / then the main file for your site, index.php, index.html, etc.

RewriteCond %{HTTP_HOST} ^(www.)?domain.com$

RewriteRule ^(/)?$ site_en/index.html [L]

# BEGIN W3TC Browser Cache
<IfModule mod_deflate.c>
<IfModule mod_headers.c>
Header append Vary User-Agent env=!dont-vary
</IfModule>
AddOutputFilterByType DEFLATE text/css text/x-component application/x-javascript application/javascript text/javascript text/x-js text/html text/richtext image/svg+xml text/plain text/xsd text/xsl text/xml image/x-icon application/json
<IfModule mod_mime.c>
# DEFLATE by extension
AddOutputFilter DEFLATE js css htm html xml
</IfModule>
</IfModule>
# END W3TC Browser Cache
# BEGIN WordPress

# END WordPress
RewriteCond %{HTTP_HOST} ^domain\.com$ [OR]
RewriteCond %{HTTP_HOST} ^www\.domain\.com$
” [R=301,L]

HTACCESS AT PUBLIC_HTML\SITE_EN

## EXPIRES CACHING ##

ExpiresActive On
ExpiresByType image/jpg “access 1 year”
ExpiresByType image/jpeg “access 1 year”
ExpiresByType image/gif “access 1 year”
ExpiresByType image/png “access 1 year”
ExpiresByType application/pdf “access 1 month”
ExpiresByType application/css “access 1 month”
ExpiresByType application/js “access 1 month”
ExpiresByType application/x-shockwave-flash “access 1 month”
ExpiresByType image/x-icon “access 1 year”
ExpiresDefault “access 2 days”

## EXPIRES CACHING ##

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ – [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress

<files ~ “^.*\.([Hh][Tt][Aa])”>
order allow,deny
deny from all
satisfy all
</files>

<files wp-config.php>
order allow,deny
deny from all
</files>