This is a non-secure form.

I get that message every time I use a website for my Real Estate business. It is a very secure site and is only accessible to Realtors. It logs me out every 3 hours so I have to click Ok to this prompt many times a day. I don't have to do this but once with Chrome, but for various functional reasons, I want to stay with Safari. Is there a way to disable that prompt?

FYI, I have already done the following;

Warn when visiting a fraudulent website is unchecked

I have removed all extensions or disabled them