Try this as I had similar and now it forces everyone to
https://flipfloptrader.com
Code:
#RewriteEngine On
RewriteEngine On
RewriteCond %{HTTP_HOST} www.flipfloptrader.com$
RewriteRule ^(.*)$ https://flipfloptrader.com/$1 [R=301,L]
RewriteCond %{SERVER_PORT} 80
RewriteRule ^(.*)$ https://flipfloptrader.com/$1 [R,L]
ExpiresActive Off
Replace flipfloptrader with your website.