Hi, yes, it's known issue. You need to have both VMware Tools > 10.1 AND Guest User mapping configured for SDDC Health 2.0 be able to monitor vcenter services.
Guet User mapping should be configured through Web Client.
As updating VMware tools is not something that you probably want to do on a appliance, you might start with configuring Guest U ser Mapping and open SR with VMware if still no data will be coming. Ah yes, for user mapping you need to map vcenter adapter collection account against root.