Please test to see if it works: https://hub.jmonkeyengine.org
(copy it into your browser bar)
There shouldn’t be any browser warnings or broken links / images. However I noticed I get a mixed content warning on the screenshots thread because many imgur links have “http://” prefix, probably not going to fix it.
What’s funny is that simply clicking on that link took me to the http site again. I had to manually add the https at the beginning to go to the secure version.
I did that. He’s changed it so you have to cut and paste now… but originally it was just a link, and opening it in a new tab or a new window didn’t change the https’ness.