Current Activities and AD users

I am new to Sophos XG firewal and i have just configured to my network. I have a problem with STAS operations where by i am not able to see the Live users from Firewall but from Domain Controller STAS service is running and showing the Live Users.

 

Secondly i have added my domain controller in XG firewall as authentication server and do the successful test between the DC and firewall. But when i try to check on users list from the firwall, none of the AD users are shown only local users. I wanted to firewall to take AD users for authentication.

 

Please assist with proper guideline on how to setup or troubleshoot such problems.