I have a Facebook App & a Facebook Page (with Facebook Timeline enabled).
The goal is to add the Facebook App to Facebook Page's boxes. I was able to achieve this one month ago using "Add Page Tab Dialog" as told by Facebook Developers documentation, but I try the same thing today. It didn't work.
After I use the "Add Page Tab Dialog" :
https://www.facebook.com/dialog/pagetab?app_id=YOUR_APP_ID
&display=popup&next=APPS_SECURE_CANVAS_URL
It shows up the dialog and I select my page. Last, after I click "Add Page Tab", it forwards to "APPS_SECURE_CANVAS_URL". But when I navigate back to my Page's URL, my Facebook App is still missing from the page.
What did I miss ? or Facebook is changing things now ?
Current Settings
Enabled : Apps on Facebook
Canvas URL : (empty)
Secure Empty URL : APPS_SECURE_CANVAS_URL
Enabled : Page Tab
Page Tab Name : My App Tab Name
Page Tab URL : (empty)
Secure Page Tab URL : APPS_SECURE_CANVAS_URL
Page Tab Edit URL : (empty)
Page Tab Width : Wide (810px)
I found the answer.
Canvas URL and Page Tab URL must be filled in, even it is started with HTTPS.
After these fields filled in, the "Add Page Tab Dialog" direct link works with any next URL under the same domain.