I have a very unpleasant problem. I logged in to Claude with Apple. So Claude received an “hidden” email from Apple as an email address, which is also used for logging into Claude. For weeks, “Sign in with Apple” also worked wonderfully. Unfortunately, it seems Apple has forgotten this forwarding of the hidden email (it no longer appears in the settings). Since you cannot change this address in Claude and it is used for verification, I can now only use Claude on devices where I can no longer log out. New devices are impossible, Claude support is no help, and I paid for 12 months.
Is there a way to restore this hidden address and its forwarding?