How to make changes to the image direction.

Hello,

I have setup a SSL on my site and I am using the Royal theme and it seems when I first loading the page I get the message that is in the private content box sent to my console. I need to make sure and have SSL for my site per the processing company. I added this into my .htaccess file and so I thought this code may forward everything to HTTPS but it doesn’t seem to be. Do you know of a way to push all items to HTTPS so I don’t get this message in the console. The site loads (“It’s on maintenance Mode right now”) still building, but it loads much slower with a yield sign over the SSL emblem. Is there another code to add that will help with this that I am not aware of?
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}