Merge pull request #2705 from bergiusj/patch-1

Update auth-facebook.mdx

web/docs/guides/auth/auth-facebook.mdx

@@ -61,6 +61,13 @@ From the `Add Products to your App` screen:
 - Enter this in the `Valid OAuth Redirect URIs` box
 - Click `Save Changes` at the bottom right
 
+Be aware that you have to set the right access levels on your Facebook App to enable 3rd party applications to read the email address.
+From the `App Review -> Permissions and Features` screen:
+
+- Click the button `Request Advanced Access` on the right side of `public_profile` and `email`
+
+You can read more about access levels [here](https://developers.facebook.com/docs/graph-api/overview/access-levels/) 
+
 ### Copy your Facebook App ID and Secret
 
 - Click `Settings / Basic` in the left sidebar
@@ -110,4 +117,4 @@ function signout() {
 
 * [Supabase Account - Free Tier OK](https://supabase.io)
 * [Supabase JS Client](https://github.com/supabase/supabase-js)
-* [Facebook Developers Dashboard](https://developers.facebook.com/)
+* [Facebook Developers Dashboard](https://developers.facebook.com/)