So this issue has gone unresolved for 4 months at this point. The cause of the issue was pointed out last month. I gotta admit this is getting pretty frustrating at this point.
There is a post on the xenforo community specifically talking about this problem. In Admin panel -> options -> basic board information, the forum URL is listed. If it doesn't include https, that's the problem.
https://xenforo.com/community/threads/http-propertys-on-https-website.164450
Unfortunately, it doesn't seem like that's a configuration that can change but is rather calculated.
I am wondering if the problem has to do with webserver setup. Does disboards's hosting service use a load balancer? I see disboards uses LiteSpeed as its webserver, and the domain was registered with Network Solutions, LLC, but I'm not sure if this system is selfhosted or through a third party hosting company (actually I think it's RackSpace?).
Anyway, I'm assuming
https://disboards.com posts to the load balancer. If the load balancer then forwards requests to individual web servers, and those servers aren't running https, THAT could be the issue. Whoever is in charge of the tech on this board might be able to fix this by making sure the load balancer includes a HTTP header of "
x-forwarded-proto" with a value of "https". That would tell the web server that is actually serving the board that the load balancer get the request via https. MAYBE that would fix it., assuming this is how disboards is set up.
If that's NOT the problem, it is somehow a related issue where requests to
https://disboards.com seemed to maybe get redirected to a non SSL version, and xenforo thinks the board is running not under SSL.
Hopefully
@WebmasterCorey or whoever can run with that...