Need help changing email. Hidden email address for Apple account. Any issues

I can’t receive email messages. Because I’m using an Apple account. The Apple account provides you with a hidden email address. But now the hidden email address from Apple can’t be forwarded to my mailbox. So I can’t receive messages. What should I do if I need to change my email address?

This is the one-sentence answer from help.openai.com, a help page which has been altered several times but with unwavering overall message, holding steadfast against reasoning:

Currently, we do not support updating the email address associated with your account.