Our URL Redirection (WWW Redirection) which you can enable in the LoopiaDNS service can be most easily compared to a PHP script that uses the header() function to change the address that the browser displays.
The equivalent PHP code that we use is appended to this document and it is only to replace https://www.loopia.se/closed/ with the address you want to use instead.
Right-click on this link and select Save As index.php to save the file to disk and then you can upload it to your public_html/ folder.