Ember-simple-auth set cookie expiration time

Hi, following the doc from CookieStore - ember-simple-auth i tried to change cookieExpirationTime but it still expire in one hour after login, here is my code :

//login.js
...
@tracked _rememberMe = false;

  @action
  async authenticate() {


    try {
      await this.session.authenticate('authenticator:oauth2', this.loginChangeset.email, this.loginChangeset.password, [this.selectedLoginOption]);
    } catch (error) {
      console.log('error ', error)
      this.errorMessage = error.responseJSON.message;

      this.notifications.error(this.errorMessage, {
        autoClear: true,
      });

   } finally {

      if (this.session.isAuthenticated) {

        const me = await this.store.queryRecord('me', {});
        console.log('me ', me);
        // const expirationTime = 14 * 24 * 60 * 60;
        // this.session.set('store.cookieExpirationTime', expirationTime);
        this.session.set('data.user_type', me.typeModel);

      }
    }


  }


  @action
  rememberMe(evt) {
    this._rememberMe = !this._rememberMe;
    console.log('set rememberMe ', this._rememberMe)
    let expirationTime = this._rememberMe ? (14 * 24 * 60 * 60) : null;
    this.session.set('store.cookieExpirationTime', expirationTime);
  }

// app/session-stores/application.js
import CookieStore from 'ember-simple-auth/session-stores/cookie';

export default class ApplicationSessionStore extends CookieStore {}

i get this cookie


ember_simple_auth-session-expiration_time:"1209600000"

ember_simple_auth-session:{
   authenticated:{
      authenticator:"authenticator:oauth2"
      token_type:"bearer"
      expires_in:3600
      scope:"create"
      expires_at:1626431516189
   ....
  }

}

ember_simple_auth-session-expiration_time is set to the right date , but when an hour is passed i am logged out automatically .

And from the api i get this header response with the right expiration date :

Set-Cookie  jwt=...................................................; 
Path=/; 
Expires=Thu, 14 Oct 2021 09:51:14 GMT; HttpOnly

thank you.