I'm using Firebase Auth for Google, Facebook, Twitter, GitHub, and Microsoft. Yahoo doesn't work, it rejects the callback domain. Firebase provides the callback domain languagetwo-cd94d.firebaseapp.com
.
The error message is "Callback Uri must be a valid URL."
I added https://
and it's accepted.
But when I try to login I get an error message Developers: Please check the redirect URI in your request and submit again.
I contacted the Yahoo help desk they said, "Unfortunately, we are not able to assist with issues relating to OAuth2." Any idea why Yahoo doesn't work with a Firebase callback domain?