Symptoms:
vSphere Live Recovery 9.x
The token verification information may become outdated or inconsistent across hbrsrvuw instances, causing authentication issues during enhanced replication operations.
1) Take snapshot of vsphere replication appliance on both sites.
2) SSH into the appliance
3) Perform a restart of hbrsrv service using 'systemctl restart hbrsrv'
See the reference article for enhanced replication not active state: Error in vSphere Replication Enhanced Replication Mappings