Hi Annanacha,
Thank you for bringing this concern to us,
I understand that there where issues on PIN - option not available. We apologize for the inconvenience.
Please let us work together to find the a solution for this concern.
Please see this answer on this discussion bellow on the Microsoft community. Windows 10 users who have encountered this same concern had reported that the steps on this answer fix their issue.
Pin Login not available and can't change or remove my pin
https://answers.microsoft.com/en-us/windows/for...
Please let me know on how I can provide further assistance Annanacha.
Continue to be safe and have a good day.
Best regards,
Anthony De Jesus
Independent Advisor