Just a “heads up” but I got all sorts of security warnings from my browser, my security software and my password software when I registered for this forum. Enabling and enforcing secure HTTP would be a substantial leap forward, and improve the security for all users. Also, by avoiding the security warning messages alone you get some more potential members.
For an experiment, I tried using the HTTPS prefix for the forum’s address, but it did not connect. Clearly it’s not even an option on your web server.
Just a suggestion!