SSL is invalid with www in domain.

I have a website at: webstrategyviking.com, and the certificate is setup without the WWW for that domain.

The Certificate is throwing that it is invalid when you access the website via https://ift.tt/2IcH5km

RewriteCond %{HTTP_HOST} ^www\.
RewriteRule ^(.*)$ http://webstrategyviking.com/$1 [R=301,L]

I figured doing an htaccess would fix it, but it doesnt. Within Wordpress's settings and General, I set the URL and Domain URL to be https://webstrategyviking.com to no success.

What am I missing?