[WooComm] HTTPS Checkout Elements

I am using Woocommerce and have purchased a COMODO SSL but it seems as though some files in WordPress aren’t using HTTPS and its showing the SSL padlock with a warning sign on checkout. I’m not sure if this matters entirely but i’m processing payments with stripe and I’m still a bit sceptical if some files aren’t being encrypted as sensitive data is being passed through http://i.imgur.com/eWncsJ3.jpg

I have checked force https/ssl in the settings but it didn’t do anything. I’m getting a fully green padlock in the admin area though..