Where can I download apple-developer-domain-association.txt?

It looks like they aren't requiring domain verification in this way anymore - but I'm also confused about this since the documentation hasn't updated to reflect the new UI.

There is an apple-developer-domain-association.txt for email domain verification IIRC

I cannot find also. Indeed the documentations are not updated. This is confusing...

Is there any news on this? Do I need apple-developer-domain-association.txt or not - Since there is not download link ...

I'm stuck on this too.

I'm getting a invalid-credential error and don't know if this error is related to this.

Apple is using their monopoly to force developers to use Sign in with Apple, and then has the audacity to provide inadequate documentation.

They don't have to provide good docs, because we have to figure it out anyways.