After not be able to save at global settings tab i did make a backup , reinstalled zimbra nad now try to restore.
Message i get is:
Error code: service.LICENSE_ERROR Message: number of accounts exceeds the limit: 50 Details:soap:Receiver
and i have just 18 accounts...
and unforunately i have already migrate messages from my old imap to zimbra.
This is starting to be a nightmare...come on...!!!!!