Apple's Hide My Email can create a unique relay address for a website or app. If your Profile was registered with that address, use the same Apple sign-in context or that exact registered relay address. A different relay address generated later does not automatically match a normal email already registered on your Profile.

If you can sign in and the option is shown, use Client Portal > Security > Email Address > Update to change the registered email. If you cannot sign in, contact the established account-recovery channel at [email protected] and follow its identity checks. Do not create a second Profile. Never send a password, one-time code or identity documents through ordinary chat or email.