Its really weird, because this worked a week ago. Suddenly it doesn't work anymore
When I try to login with my facebook account it says
Couldn't resolve host 'graph.facebook.com' (im redirected to a 404 error)
I have this in the url
is there some kind a problem with the url return value or so ?
Im also using SSL (https) but it worked a week ago as I said
I got this error also on the backend
Facebook API Error: Couldn't resolve host 'api-read.facebook.com'
and a lot of warnings like this
Warning: Creating default object from empty value in /administrator/components/com_jfbconnect/assets/sourcecoast.php on line 117
That indicates a server configuration issue. Basically, your host is unable to lookup the ip address for facebook and is then throwing those messages.
I'd contact your host to see if they've made any changes recently and let them know the problem you are having so they can investigate further.
Hope that helps, but if you continue to have problems, let us know and we'll help how we can.