You have run the Symantec Endpoint Protection Management Server Configuration Wizard and pointed it to a disaster recovery file from a previously existing Endpoint Protection Manager, in an attempt to restore communications with existing clients. But clients are still not communicating with the new Manager.
Clients are not communicating.
A disaster recovery file is only part of a full recovery; it can be useful by itself but does have some limitations:
The recovery file only stores the default domain ID; IDs for all domains (including the default domain) are stored in the database. To resume communication with existing clients that were connected to non-default domains, those domains must be re-created or restored from a database backup.
If you use the recovery file to re-configure an existing installation, the Manager certificate can be restored but the existing default domain ID will not be changed unless you restore a database backup. Also, if you choose in the Wizard to configure the Manager as a replication partner, the default domain ID in the recovery file will be ignored and the Manager will use the domain ID(s) in the database of its replication partner.