Apple ID password recovery SMS not received, request lost
I'm trying to help my sister to recover her apple account (lost password and no more access to the registered phone number). I've created a request on my iPhone and she received an email telling her that I'll receive the instructions by sms on my phone number within 13 days (expected date yesterday 2026/01/13)
I've never received this sms and when I connected on https://iforgot.apple.com/ to track recovery state, there was no recovery tracking, I had to create a new request. I'll receive the new expected date tonight but i'm worried it will take a long time again.
What could explain the first request has been "forgotten"? (obviously she had lost here apple account password so she can't have reseted the password recovery process)
Thanks for your help
iPhone 14 Pro, iOS 26