Just want to remind that the certificate issue is still active.
Firefox does not show http version the
http://aurora2.pentarch.org/ => server not found
Firefox shows the site via https with the manual security exception
Chrome does not give a chance to make a security exception and does not show the https site
Chrome follow the HSTS redirection from http to https and again give no chance to make a security exception.
It is not possible to use chrome for aurora2.pentarch.org for me, for now.
3 other browsers allow me to make security exceptions. So the site is accessible after all, but strangers needs to have strong intention to use it.