OK, the content's back.
But the site's still delivering an expired SSL cert.
Do tell us why it's taken over 12 hours and counting to get a new one (assuming you'd only just realised when you posted that message)
PS best practice says you should set HSTS when delivering content over SSL, else you're vulnerable to a MitM attack. Of course, if you'd done that, the site content would still be unavailable.....