Well in Facebook app dashboard you need to add this url : " orchestral-winds.firebaseapp.com " as well as orchestralwinds.com in order for the facebook to work .
Same goes for other social logins as well.
check video : https://youtu.be/0h3oECa2JMg?t=271
No you should write only domain names not urls .
it should be
orchestral-winds.firebaseapp.com orchestralwinds.com
Those are the domains that I have entered. Facebook is the one that adds in the https://
My goodness, I went through firebase and checked a stack of things, and noticed that the redirect uri was now different. So I copied and repasted it in the apps (a dash between the words was missing), and now all the apps work.
I guess that must have been the original problem, before you created the new webapp, because the problem was always the same.
Thanks for having so much patience with this!