I have an old application that I'd like to get running again. I've updated the Facebook PHP-sdk to the latest version (I think) and everything is working for most users. Except those using secure browsing.
My app simply tell me that:
This application does not yet support secure browsing (HTTPS).
How do I fix this? I've looked though all the settings in the app-page and I can't figure it out.
You need to purchase and setup an SSL certificate and then plug your https url into your app's settings page. See their migration guide where it says this is now required.