Hi,
The only thing I see different from my usual settings is the Rewrite base and the rewrite rules. Yours got a “wordpress” directory.
# 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
But in your website url the wordpress has a Capital letter “WordPress”
http://wlu14www285.webland.ch/Wordpress/
if you try this it wont work
http://wlu14www285.webland.ch/wordpress/
Also you hosting server seems to be slow.
What is your current WordPress memory? Is defined in the wp-config.php
-Rui