When trying to access your community site, do not use https together with www. You can either use https://community.beam.gg or community.beam.gg, but not www.community.beam.gg or https://www.community.beam.gg.

www is where the subdomain sits. It's referred to as the "host name". So in this case, the host name becomes "www.community". Getting a privacy error here is a guarantee because the website does not even exist and that's why it results in an Error 502.