How do I set the administrator contact email address listed in the Basic Hotpot Landing page?

Using the XG Firewall Basic Guest Access Hotspot Password of the Day Feature, On the guess access login page 

it Says

Password of the day ___________

Sophos Firewall

For Administrationve questions please contact SomeUser@SomePlace.Com

That address "SomeUser@SomePlace.Com" is not the address i would like to appear for my guests. I would like to enter a different address however I can figure out how or even where it got the first address from.

Any help would be appreciated

BTW the address "Someplace@Someplace.com" is just a place holder i made up for demonstrative purposes.

Thanks Dek

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