FB connect - invite friends, no notification

If you are using FB connect module and its Invite friends submodule or making your own invite FB friends submodule (which is easy). You could probably get into a problem of having no notifications sent to user when you do click Invite in FB dialog box.

There are 2 possible reasons for that. One your app is missing the canvas configuration
Just add it from the your App panel in Facebook Developers. Currently it is in settings tab (4/2014) on link https://developers.facebook.com/apps/383569161782956/settings/
where you need to click "+Add platform" and then choose "App on Facebook" and then add URL of your site there and save.
The second one - make sure your app is NOT in SandBox Mode or currently called Dev mode. If it is it probably won't send any notifications.

and for making a invite form all you need to is add this code to some button.

<script src="http://connect.facebook.net/en_US/all.js"></script>

function FacebookInviteFriends()

            var request = {
                message: "my message",
                method: "apprequests"
            FB.ui(request, function (data) {
                if (data.request_ids.length > 0) {
                    alert("Facebook invite successful.");

//HTML Code
<div id="fb-root"></div>
<a href="#" onclick="FacebookInviteFriends();"> 
Facebook Invite Friends Link