These are pages that have high-risk assets, such as scripts, being served via HTTP. Most browsers will completely block these assets, which will likely break some sort of functionality on the page.
Ok. Could you create a new user for me in you admin panel? In that way, I can do test or change the code, and check if it works correctly.
I have done this with other users, so you can trust me. You can send me the informatio to admin@creabox.es