Can't finish setting PIN step

When I try login on https://cloud.sophos.com/,central always response the  https://cloud.sophos.com/mfa/fallback/form,even me try again with 30 minutes later,still same situation,always ask me to input security code and PIN,when i clicked continue and get the same message again.



Edited TAGs
[edited by: Gladys at 12:30 PM (GMT -7) on 30 Mar 2023]