When I go to the games page and select Divine Discs, I'm told by Firefox that the page itself is not secure?

Using Window 10 and the most updated version of Firefox. This is the only non forum page I've encountered on site with that problem. [edit] Odd now it's not giving me that error... [edit] I stayed on the page and refreshed twice and the 'not secure' icon popped up again. I don't know what's going on.... it's the only page I'm getting this on that again it not forums.