My users used to be able to login with Facebook.
After the issue from a week ago or so where the Auth0 site went down, my users no longer can.
Facebook is saying something about the app being in development mode.
Is this something I need to fix, did I miss an announcement?
Welcome to the Community!
When you look at the settings for the FB connection, do you have your own App ID and App Secret configured, or is the connection using the default Auth0 developer keys?
Auth0 Development keys
Thanks for clarifying! The development keys are meant for temporary use and will not work properly in production. You can create your own keys by following the guide here: