session.gc_maxlifetime specifies the number of seconds after which data will be seen as 'garbage' and potentially cleaned up.  


You can adjust this setting in the Platform, log in to the Platform, select the website from the dashboard and then select either Upgrade PHP Version or PHP & Databases from the site menu.


Scroll down to the PHP Configuration section and type session.gc_maxlifetime in the first box and our suggestions will display when you click in the Values box.  Click Update Configuration to save your changes.