Popups appear 4 minutes after visiting a page

[aeonoea]

Describe the bug Hi, I managed to link this plugin to our SSO server from Synology and log in works great. There is only one bug that prevents me from using it at the moment. After successful login, when in the admin backend on any page there is some kind of timeout active, at exactly 240 seconds after opening a page. The popup is just a miniature version of the dashboard at first and can be closed. But after another 4 minutes there is another popup stacked on to it, and another... and at some point when trying to close them I am redirected to the log in page, where I can click on Login via OpenID and I am immediately logged in again.

Is there some kind of timeout setting that I missed? The only one I can find seems to be related to the communication between sso server and plugin and it's set at 180 seconds, so that can't be it.

To Reproduce Steps to reproduce the behavior:

1. Log in via OpenID
2. Browse and do stuff
3. When idle for 240 seconds popup appears (see screenshot)
4. Close popup or be redirected to login screen

Screenshots

WordPress Environment

• PHP Version: 8.2.15
• WordPress Version: 6.6.2
• Plugin Version: latest
• Identity Provider: Synology SSO
• Relevant Plugin Settings: mostly default