If you wish to redirect your domain from non-www to www, place the following code to your .htaccess file, which you can find from your domain's root directory:
RewriteEngine On RewriteCond %{HTTP_HOST} !^www\. RewriteRule ^(.*)$ https://www.your-domain-goes-here.com/$1 [R=301,L]
If you wish to redirect your domain from www to non-www, place the following code to your .htaccess file:
RewriteEngine On RewriteCond %{HTTP_HOST} ^www\. RewriteRule ^(.*)$ https://your-domain-goes-here.com/$1 [R=301,L]
If RewriteEngine On already exists in your .htaccess file, you may remove it.
This example uses https:// protocol. If your domain does not use https, change it to http://
If you don't wish to edit your .htaccess file, you can add a non-www to www or vice versa redirect from the PBN dashboard.
Just click on "Actions" > "Misc" > "Domain Redirects" and turn the redirect you prefer either "Redirect to "WWW" - on (or) "Redirect to "non-WWW" - on.
You can use either the htaccess method or domain redirects method to set redirects for your domain.