Facebook integration in cross-platform mobile apps

I am using Parse for JavaScript, and is working with the ionic framework within the Intel XDK.

I am trying to incorporate social media login, where users are able to signin using facebook.

I generally know how to navigate this but my main concern is the following: I am using facebook for javascript where it requires a URL, and when that URL is not accessible it doesn't work. Hence, on an iphone or android I cant use facebook yet.

The specific error I get is the following:

Warning
Given URL is not allowed by the Application configuration.: One or more of the given URLs is not allowed by the App's settings. It must match the Website URL or Canvas URL, or the domain must be a subdomain of one of the App's domains.

What have I done as far? I went over the following guide thoroughly: http://ift.tt/1rqukyS

It does mention near the end of the guide that

You may have to add an iOS setting or Android setting too eventually when you deploy to either platform.

and this is the part where I am having issues, and for a while.