Single Logout Doesn't work

Hi Team,

      I have an PHP application and integrated with OKTA hosted domain successfully. Single Sign on works perfect. Once I logout my application, Okta admin panel too logout perfectly via calling Logout API. But the Issue was, when I logout directly in my OKTA admin panel, My application still logged in. Please help me to sort out this issue. I set logout call back url properly in adminpanel.

SLO doesn’t work the Okta → applciations way
if you wish to terminate the application session if there is no IdP session active, you will have to verify this using the sessions API or make use of event hooks