This is a comment on Session duration problem, posted by WikiAdmin at 15.02.2019 15:21

View source for Changing session duration

For the meantime you can of course try to raise the session related time values. Guess you should add a factor to the following :

* FACTOR (12*60*60)

class/session.php
%%
public $cf_nonce_lifetime	= 7200*FACTOR;
public $cf_gc_maxlifetime	= 1440*FACTOR;
public $cf_max_idle		= 1440*FACTOR;
public $cf_max_session		= 7200*FACTOR;	// time to unconditionally destroy active session

public $cf_regen_time		= 500;		// seconds between forced id regen
public $cf_cache_expire		= 180*60;	// ttl for cached session pages in seconds
%%

I did not test if it works, does it?