How to direct users to a subcatalog

You can achieve this using .htaccess redirection rule.

Please try below redirection rule:

# Permanent URL redirect
Redirect 301 /index.html http://stolsvidda-loypelag.no/wordpress/index.html

NOTE: Here, I assume that your wordpress folder contains index.html

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)