Continue with Apple now appears beside Google and LinkedIn on the website's sign-in and registration pages, and in the mobile app. On iPhone and iPad the app uses the device's own Apple sign-in.
An Apple account signs in to the Magpie account it is linked to, or to the account with the same verified email address, which it is then linked to. Connect or unlink Apple in Account settings on the website. If you choose Hide My Email, Magpie receives an Apple relay address, which starts a new account; to use Apple with an existing account, connect it in Account settings first.