I just ran a SSL Lookup & Reporting tool and it reports you have no SSL certificate.
SSL Lookup & Reporting Tool
The SSL examination report looks at the SSL certificate on a website and provides SSL validation information. The report will check for hostname mismatches between your domain and what is on the certificate, as well as whether the certificate is expired, revoked, or trusted.
Sorry, there was a problem.
- No certificate found.
_
Even Firefox shows all 3 domains are not secure (https, www, and non-www).
Do you have a SSL certificate for your domains? A redirect to/from https would most likely return errors when there is no SSL certificate.
Checked all 3:
https cannot establish a connection;
http (hardwaremana.community) is returning a blank page; but
www does load Discourse (black & crossed out padlock).