The site does work with the default permalinks.
I looked for an .htaccess file, but couldn’t find one (i had view hidden files turned on), so I created one with this snippet and made sure it was writable.
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress
Honestly, I’m kinda lost with the .htaccess part.
Thanks for the help!