As mentioned, no community member can help resolve this. You can try this below.
If it is a microsoft account contact Product Support with the email address for the affected user. https://azure.microsoft.com/en-us/support/create-ticket
For Work/school accounts you need to contact the admins of those accounts. So in this case you need to contact the school IT admin to help you with this
You can mark it 'Accept Answer' and 'Upvote' if this helped you
Regards