Ok, alex I changed Error Setting to Maximum.
By the way - in my facebook settings I deleted the APP. Also I deleted my facebook profile in JFB Profiles to see what´s happens.
For testing I did follwing: I made a LogIn to my site. Then a I clicked below "Connect this site to your Social network?" to the facebook button.
Normally the facebook window opens and ask me to give rights to the APP for the site. But nothing happens like this. Only the message comes - You are now being logged in using your Facebook credentials.
When I take a look the app isn´t shown in my facebook settings !!?? So something goes wrong
But in JFB connect in Profile menu the my facebook account is shown!!??
For further testings I opened my second testsite without multilingual settings where the same APP is saved in JFBConnect settings.
I loggedIn as admin ant then I clicked to coennct with facebook. And here the the Facebook window shows me the APP for connecting and in second window the I will be asked for who will see may posts. After confirming this, the facebookaccount has been connected with my joomla account. And in my facebook settings I the app is registered.
It´s so strange