Adding App to Fanpage - “Not supported”

Question

I followed the directions on facebook to add my app (which is a tab) to my fanpage:

\"Facebook Page administrators can add your app directly to their

Answer 1

Go to your App Settings, then Basic and add a platform as page tab. Provide a URL with https, even if you don't have it, just to test. Then run this page and you can successfully add your app to the page tab.