We are being asked to set the OAuth redirect URI for Facebook (as shown below) in the instructions to set up Google Firebase to use Facebook login.
We clicked in every menu for our app. Where is it? Could it be called something different?
From the Firebase documentation:
...make sure your OAuth redirect URI (e.g. my-app-12345.firebaseapp.com/__/auth/handler) is listed as one of your OAuth redirect URIs in your Facebook app's settings page on the Facebook for Developers site in the Product Settings > Facebook Login config.
I had a hard time finding this setting too.
If you are on https://developers.facebook.com/, you can find your apps listed in the top right, next to you profile picture. Selecting the app, will take you to the settings for that app.
In your app settings on https://developers.facebook.com/sa/apps/<my-app-id>, make sure that you add the Facebook Login product. Then under "Client OAuth Settings" enter the URL in the "Valid OAuth redirect URIs" box.