Is there any way, i can see the username of a user instead of IP address? if the user recognition parameter had been configured just today?
Is there any workaround i can do to see those users if the zdata exists on the AMD for the last 30 days?
No - you can't do that. In the ZDATA files you will only found what was seen when they were created so you can't add or change a configuration and reprocess. If you reprocess they will only tell what you saw the first time.