Hi Mike.. Firstly thanks for a great plugin.. and sorry if this has been answered elsewhere - I wasn't able to find the solution myself.
I know your plugin works because everything was working fine a couple of days ago. I have forced SSL Admin/Login and also on a page to "Submit Content" and got the nice green https..
Then yesterday, after I had done a bunch of work with installing W3 cache, Cloudflare and a few other plugins I noticed that now I'm getting the dreaded Chrome "Insecure Content" warning when trying to login.
Seems it is fetching the favicon (twice for some reason) and this is being served over http... I've tried removing your plugin and then reinstalling and activating in the hope it will fix things like it did before but no go.
I've also purged all caches, on my machine, W3 and on Cloudflare..
Can you help a brother out?