ZeXtras admin module error message

Hi all,

We're using ZeXtras suite mainly for ZxChat feature on an Zimbra 8.0.6 Network Edition.

A defined domain admin gets the following warning notification while logging into Zimbra Admin

"ZeXtras Suite Delegated Administration features have been disabled. Please refer to your Global Administrator(s) for more information."

How can i disable this notification? Especially as ZeXtras admin module is disabled on Zimbra Network Edition.

We are running ZeXtras Version 1.8.13.

Thanks for any help.

Chris