I use login using Apple for an account for the website isekai zero.ai which is both an online service and an iOS app.
When I tried to login this morning, I found that the email address created by hide. My email had been changed so I could no longer connect to my account.
I called the Apple support line and it told me that Apple doesn’t change those email addresses, but someone changed it. Any idea how I could get my account back? I somehow need to create a new hide my email/login with Apple using my old email address, but when I tried to create one, it doesn’t seem to give me any choice for the email address.