Hi Engxladso,
About password expiration policy, we can set two values in Office365, one is “Days before passwords expire”(the value is from 14 to 730 days). Another is “Days before a user is notified of password expiration”(the value is from 1 to 30 days). This policy will be applied to all users.
Please click “change now” to check the current values.
If the number of password expiration days has been changed to 730 , based on my experience, it needs to wait for some time to let the changes to take effect.
Thanks
Jacky Ding