Well I had hybridauth working and login correctly using facebook since 2 weeks ago, I did not any change and this morning I found that it was not working. I tried to switch
Maybe your configuration sends KEY instead of ID:
Facebook Example:
"keys" => array ( "id" => "PUT_YOURS_HERE", "secret" => "PUT_YOURS_HERE" )
Twitter Example:
"keys" => array ( "key" => "PUT_YOURS_HERE", "secret" => "PUT_YOURS_HERE" )