Hi Frank!
Thanks for the reply. Unfortunately it does not seem to be with the .htaccess file. Here is the code of my .htaccess:
# 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
Is there anything else that you think I can check?
Thanks in advance for your help!