Trying to look into this, but a thread was begun identifying issues with this module (using latest) for an admin user that is not given superuser permissions while logged in to a ZC 1.5.4 site. Thread: https://www.zen-cart.com/showthread.php?t=217827

Admin Logs have repeated "attempted access to unauthorized page [keepalive] for legitimate admin user.
This admin user is not a 'superuser', ie: has restricted permissions.
SuperUser admin does not cause similar log entries.

Code:
notice
2015-07-21 06:29:06
199.xx.xx.xx
2 DailyAdminUser (not SuperUser)    
keepalive.php    
r=0.8515617775265127    
1        
Attempted access to unauthorized page [keepalive]. Redirected to DENIED page instead.    
Array
(
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