Primary mapping problem

You can only map domains with the plugin. Mapping URLs is not supported by the plugin or DNS.

In this case https://www.studyfoundation.ch is a registered domain. It already points to https://www.studienstiftung.ch/en without your plugin. Could this be the problem?

In this case https://www.studyfoundation.ch is a registered domain. It already points to https://www.studienstiftung.ch/en without your plugin.

Yes, that’s what causing the infinite redirect..

We have eliminated the redirect from https://www.studyfoundation.ch to https://www.studienstiftung.ch/en. The mapping seems to work now correctly. But I can’t access the subpages of the site. E.g. https://www.studyfoundation.ch/partners (previously https://www.studienstiftung.ch/en/partners) goes to “Not Found The requested URL /partners/ was not found on this server.”
What can causing this?
Beste regards Jean

What can causing this?

The URL has changed. You need to add some rewrite rules to your .htaccess to rewrite the old urls to the new ones.

Any advise on how to change this .htaccess from the old url https://www.studienstiftung.ch/en to the new url https://www.studyfoundation.ch is highly welcome:

# WordPress
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ – [L]
# add a trailing slash to /wp-admin
RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]
RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ – [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) $2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
RewriteRule . index.php [L]
# Media Library
php_value upload_max_filesize 64M
php_value post_max_size 64M
php_value max_execution_time 300
php_value max_input_time 300
# Disallow access to important files
<FilesMatch “(^\.|wp-config\.php|xmlrpc\.php|(?<!robots)\.txt|(liesmich|readme)\.*)”>
Order deny,allow
Deny from all
</FilesMatch>
# Prevent Directory Listings
Options -Indexes