I have a problem concerning mixed content and I would really appreciate your help.
The plugin works great. But only in the Firefox Browser the following situation appears:
After some minutes on my website the green lock changes and a mixed content warning appears. It is because of fonts which are loaded from the Google and one other external Server (for example: “Loading mixed (insecure) active content “http://fonts.gstatic.com/s/lato/v14/S6uyw4BMUTPHjx4wXg.woff2” on a secure page). I searched in HTML and Css files but I could not find anything. I don’t use these fonts in my theme. Also I installed a plugin which is supposed to block the connection to Google Server (I downloaded the fonts to my own server). So I really have no idea why there is this problem. It only appears sometimes and only with the firefox browser.