I have been given access to an Apple developer account for a couple of things, so I decided to take advantage and try this to see how it works, I ran into a problem that I wanted to confirm, in Return URLs should be used https://example.com/apple-signin?
I've been trying but I have not been able to do so, I have seen in the extension settings that appeared this other url https://example.com/auth/apple, with this apparently it works, so it's a typo of the OP?
Another thing is about the verification of the domain, to download the txt, I can't find the option anywhere, maybe they moved it? š¤