The Reporter collection job finishes with the Warning status due to sockets number exceeded. To make sure this is the case, open the Reporter web page and navigate to Configuration > Sessions node and double-click the corresponding session, scroll to the bottom of the job log and find the [warning]: Sockets number exceeded line.
Behavior by design.
The data in the reports will only be available for the hosts included in data collection on Veeam One Monitor side (Monitor UI -> Options -> Server Settings -> Monitored Objects\Hosts\VMs (depending on Veeam One version)).
Please be aware that we’re making changes which will restrict access to product updates for users without an active contract.