You may need to edit the below code in your .htaccess file:
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RewriteEngine On
RewriteCond %{SERVER_PORT} 80
RewriteCond %{HTTP_HOST} ^(www\.)?yourdomainname\.com$ [NC]
RewriteRule ^(.*)$ https://yourdomainname.com/$1 [R=301,L]
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Note: If you are a windows user you may proceed to let our support knows on the rules on which your side wish to redirect the website as windows base hosting do have a different type of rules to be implemented from the back end.